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E-mail Client Testing for S/MIME

E-mail Client Testing for S/MIME Compliance

Version 1.1 January 2004

Table of Contents

1. Background
2. Selection of Mail Clients
3. Testing
4. Test Results

5. Configuration of Mail Clients


1. Background

At the RIPE 45 Meeting a proposal was presented to implement an additional form of strong authentication for protecting objects in the RIPE Database and to allow for secure communication by e-mail with the RIPE NCC. This implementation uses the X.509 certificates. A question was raised by some members about how widespread is the compliance of S/MIME within mail clients. The RIPE NCC Software Engineering Department has undertaken a study to evaluate the use of S/MIME by mail clients.

2. Selection of Mail Clients

We examined all the messages received by our ticketing system for the period 1 January 2003 to 30 June 2003. This includes messages to Registration Services and the Database Administration. We extracted the information from the X-Mailer: lines and produced an almost unique list with counts of mail clients. We did not spend a large amount of time trying to exactly match up all variations of some of the more obscure clients. We then did the same analysis on the RIPE Database update logs for the same period. The two lists can be seen in full in Appendix B1.

We then selected a number of the most commonly used mail clients from the lists across three operating systems, Linux, Windows XP and Apple Mac. The tested mail client list is shown in Section 7.

3. Testing

After installing a mail client, various options and preferences had to be set in order to use S/MIME. This process is described for each mail client in Section 5. The testing was then done in two stages. The first stage involved sending a set of precomposed mail messages to the client using sendmail on Linux. These messages used clear and opaque signing and encrypting in various combinations. The messages were composed using OpenSSL to sign and encrypt them. The second stage involved sending a signed message and an encrypted message from the mail client. These messages were saved to files and verified using OpenSSL. The results are tabulated in Section 4. All the tests were completed using a certificate generated with the 2048 (High Grade) option.

4. Test Results

The three tables below show the results of the tests for the three platforms used.

4.1 Table of Linux Mail Clients

MAIL CLIENT VERSION RECEIVE SIGNED RECEIVE ENCRYPTED SEND SIGNED SEND ENCRYPTED NOTES
OpenSSL 0.9.6b Yes Yes Yes Yes
Mozilla 1.0 Yes Yes Yes Yes Failed to handle received messages signed twice. Does not always recognise a valid signature and shows message as NOT signed. (This last point is fixed in later versions of Mozilla)
Mulberry v3.1b9 Yes Yes Yes Yes On receiving, only works if the message is signed before encrypting. Fails if the encryption is done before the signing. Multiple signed messages received also failed. Could not handle an opaque signed then encrypted message.
Mutt 1.5.5i Yes Yes Yes Yes 1.5.5i is a development version of mutt
Novell NetMail 3.1 ? ? ? ? Failed to get the system installed. Little or no support from Novell
Pine 4.48 Yes Yes Yes Yes Requires patching and S/MIME support is very rudimentry.
Sylpheed 0.9.6claws No No No No S/MIME not supported. Work in progress, but no timelines.
Ximian Evolution 1.9.8-11 No No No No S/MIME not supported. Work in progress, but no timelines.



4.2 Table of Windows Mail Clients

MAIL CLIENT VERSION RECEIVE SIGNED RECEIVE ENCRYPTED SEND SIGNED SEND ENCRYPTED NOTES
Eudora 6 No No No No Eudora has a plug-in architecture which can support S/MIME. However we were unable to find any plugin that support S/MIME. It appears it was supported in past versions but none are available for the current version.
Lotus Notes 6.5 Yes Yes Yes Yes Probably the most difficult mail client we tested for clarity. There seems to be no clear indication of when messages are signed and/or encrypted, valid or not. Text appears, and sometimes remains, in a scrolling status bar at the bottom of the screen. It is not at all clear if the last text line relates to the message you are currently looking at or a previous one. Can not handle messages encrypted before signing or double signed messages.
Mozilla 1.4 Yes Yes Yes Yes Failed to handle received messages signed twice.
Mulberry v3.1b9 Yes Yes Yes Yes On receiving, only works if the message is signed before encrypting. Fails if the encryption is done before the signing. Multiple signed messages received also failed. Could not handle an opaque signed then encrypted message.
Outlook 2000 SR-1 (9.0.0.3821) Yes Yes Yes Yes Could read all valid combinations on receiving. However on ve-vcs-vcs Outlook reported it as having an invalid digital signature.
Outlook Express 6 Yes Yes Yes Yes On receiving, only works if the message is signed before encrypting. Fails if the encryption is done before the signing. Multiple signed messages received also failed.
The Bat! 2.01.3 Yes Yes Yes Yes All tests successful, even multiple signings. However, when it sends signed or encrypted mail it encodes the message.



4.3 Table of Apple Mac Mail Clients

MAIL CLIENT VERSION RECEIVE SIGNED RECEIVE ENCRYPTED SEND SIGNED SEND ENCRYPTED NOTES
Lotus Notes 6.5 Yes Yes Yes Yes Probably the most difficult mail client we tested for clarity. There seems to be no clear indication of when messages are signed and/or encrypted, valid or not. Text appears, and sometimes remains, in a scrolling status bar at the bottom of the screen. It is not at all clear if the last text line relates to the message you are currently looking at or a previous one. Can not handle messages encrypted before signing or double signed messages.
Mail 1.2.5 No No No No Looks like S/MIME is supported if you upgrade to OS X Panther (No free/demo version available for us to test.)
Mulberry 3.1 Yes Yes Yes Yes On receiving, only works if the message is signed before encrypting. Fails if the encryption is done before the signing. Multiple signed messages received also failed. Could not handle an opaque signed then encrypted message
QuickMail Pro 3.1 No No No No No plans found for S/MIME features in the near future.



5. Configuration of Mail Clients

If you need to generate a new certificate see Appendix A1.1 for instructions on how to do this.
If you need the certificate in a file to import into the mail client's certificate store see Appendix A1.2 for instructions on how to do this.

5.1 Linux Mail Clients

5.1.1 OpenSSL

If the mail client that you use regularly does not support S/MIME, you can use OpenSSL to seperately handle signatures and encryption. If you have a certificate generated through the LIR Portal or elsewhere, you will need this certificate in a file for use with OpenSSL. This can be done using a browser, for example Netscape or Mozilla. See Appendix A1.2 for instructions on how to do this.

In order to decrypt a message the file given to the -recip parameter must contain the recipient's (your) private key, followed by the recipient's certificate. The .pem file produced by using the sequence shown in Appendix A1.2 may also include the root certificate in-between the recipient's private key and certificate. In this case, this needs to be edited out. Check if there are two sections within the file wrapped by:

-----BEGIN CERTIFICATE-----
-----END CERTIFICATE-----

One section will contain your e-mail address in the preceeding attributes and the other section will contain the e-mail address of the Certificate Authority (CA) that issed your certificate. Delete the section that relates to the CA and its preceeding attributes.

In order to verify a signature and/or decrypt a message, the message must first be saved into a file from your mail client.

To decrypt a message:

openssl smime -decrypt -in enc_msg -out enc_text -recip your_cert_backup.pem
Where "enc_msg" is the file containing the saved encrypted message, "enc_text" is the file that the decrypted text will be written to (if the verification is successful) and "your_cert_backup.pem" is the file containing your private key and certificate.

To verify the signature on a message:

openssl smime -verify -in signed_message -out message_text -signer signer.pem -noverify
Where "signed_message" is the file containing the signed message, "message_text" is the file the verified text of the message is written to, "signer.pem" is the file that the certificate of the signer is written to and "-noverify" means do not try to verify the signers certificate (if you do not have the appropriate root certificate).

To clear sign a message:

openssl smime -sign -in message_text -out signed_message -signer your_cert_backup.pem
Where "message_text" is the file containing the text of the message to be signed, "signed_message" is the file the signed message is written to and "your_cert_backup.pem" is the file containing your private key and certificate.

To encrypt a message:

openssl smime -encrypt -in message_text -out enc_msg   recipient_cert.pem
Where "message_text" is the file containing the message to be encrypted, "enc_msg" is the file the encrypted message is written to and "recipient_cert.pem" is the file containing the public key and certificate of the recipient of the message.

5.1.2 Mozilla

To configure your account to use this certificate, start the mail from the   "Mail & Newsgroup"s   window.
Select   "Edit" -> "Mail & Newsgroups Account Settings" -> "Security"
Select the certificate you wish to use for "Digital Signing" and "Encryption".

To sign and/or encrypt a message, first compose the message.
Click on the arrow next to the "Security" icon in the compose window.
Select "Digitally Sign This Message" and/or "Encrypt This Message".
When the mesage is sent it will be signed and/or encrypted.

5.1.3 Mulberry

When installing the Mulberry binary the .mulberry plugins directory must be in your home directory, otherwise it will not install the S/MIME plugins.

Select   "File" -> "Preferences" -> "Security".
Select S/MIME as the "Preferred Plugin".
Select   "Manage Certificates".
Select the "Personal" tab and click on "Import...".
Select your certificate file in .pem format.
Enter the password from when you created the .pem file.
Your certificate will be imported into the certificate store.

Note it is NOT possible to import users certificates under the "Users" tab, even though the "Import..." button is still shown and still active. At the time of testing, if you try to import a certificate under the "Users" tab and select a .p12 file format it causes Mulberry to crash with a "Segmentation fault".
When you open a valid signed message it will add the senders certificate to your users certificate list.
When encrypting messages check the 'Always Encrypt to Self' to be able to read your saved messages.

5.1.4 Mutt

S/MIME support is available in the development version of mutt. Version 1.5.5i was the version tested. S/MIME functionality is similar to the PGP support. There is a supplementary script smime_keys which handles the setup and maintenance of the certificate database used by mutt. Read 'doc/smime-notes.txt' in the source.

5.1.5 Novell NetMail

Could not get the system installed and running. No direct support available from Novell and received little response from their support forum.

5.1.6 Pine

The contributed patch in the pine 4.58 source distribution (in contrib/smime) needs some manual intervention to get it to apply successfully. After the patch has been applied you can access the sparse documentation regarding S/MIME in pine/README.smime.

The README is not explicit about how the certificates should be encoded, but after reading the source it seemed they were to be PEM. We reused the Certificate Authority bundle from the mutt distribution in ~/.pine-smime/ca/ca-bundle.crt. It was then possible to send and receive signed, encrypted and signed+encrypted emails.

In summary the S/MIME support appears to be poorly supported but a knowledgeable person should be able to cobble the pieces together. Not for the faint of heart.

5.1.6 Sylpheed

We tested both Sylpheed and Sylpheed Claws. They do not handle encryption or signatures. Although they do recognise them and allow the MIME sections to be saved as a file so that they can be verified externally with OpenSSL.

Checking on various websites it appears that work is in progress to implement S/MIME but no timelines are given.

5.1.8 Ximian Evolution

It does not handle encryption or signatures. Although it does recognise them and allows the MIME sections to be saved as a file so that they can be verified externally with OpenSSL.

Checking on various websites it appears that work is in progress to implement S/MIME but no timelines are given.

5.2 Windows Mail Clients

5.2.1 Lotus Notes

To get your certificate into Lotus Notes you need to have it in a file in the .p12 format. If you created your certificate in the LIR Portal, please refer to Appendix A1.2 for instructions on how to backup your certificate in this format.

In Lotus Notes select   "File "-> "Security" -> "User Security".
Select   "Your Identity" -> "Your Certificates".
Select   "Your Internet Certificates" (not "Your Notes Certificates").
Select   "Get Certificates" -> "Import Internet Certificates".
Select your certificate backup file in .p12 format.
Enter the password allocated when this file was created.
The certificates details are displayed.
Select   "Accept All".

When a signed message is received, open the message.
Select   "Tools" -> "Add Sender to Address Book".
In the "Advanced" tab, make sure to check the box
"Include X.509 certificates when encountered".
Select   "File" -> "Security" -> "User Security".
Select   "Identity of others" -> "Show all in your address book",
this will show the received certificates stored.

5.2.2 Mozilla

The configuration process for Windows is the same as for Linux.

5.2.3 Mulberry

The configuration process for Windows is the same as for Linux.

5.2.4 Outlook

If your certificate is signed by a Certification Authority (CA) other than that distributed with Windows, then you must first install the CA certificate. Otherwise Outlook will not recognise your certificate. Outlook shares its certificate store with Internet Explorer. Open IE and navigate to the Certificates window via "Tools" -> "Internet Options" -> "Content" -> "Certificate". Click the "Import" Button to start the wizard that will handle the certificate importation.

Repeat the certificate importation for your personal certificate. After these two steps the CA's certificate should be visible under the "Intermediate Certificate Authorities" tab and your personal certificate under "Personal".

Back within Outlook, approach the S/MIME configuration via "Tools" -> "Options" -> "Security". Click the checkboxes to sign/encrypt all outgoing email as you wish. Click on the "Settings" button to choose which certificate from your "Personal" store that you wish to be your "Signing Certificate" and which is your "Encryption Certificate". Ensure that the "Secure Message Format" is set to 'S/MIME'.

For those that would send S/MIME email to you, you may import their certificates. Create an entry in your addressbook for each contact. Ensure that they have a Digital ID associated with them. To view the address book go to "Tools" -> "Address Book". Double clicking on a contact will pop up the contacts "Properties" window. Click the "Digital IDs" tab to view the certificate associated with this contact. Note: No encrypted email could be sent to a contact (even though the contact's certificate had been imported) until the contact had been added to the addressbook. Contact's are easily added by right clicking on the contact's email address when viewing email.

5.2.5 Outlook Express

To get your certificate into Outlook Express you need to have it in a file in the .p12 format. If you created your certificate in the LIR Portal, please refer to Appendix A1.2 for instructions on how to backup your certificate in this format.

In Outlook Express select   "Tools" -> "Options" -> "Security".
Select   "Digital IDs".
Select   "Import".
Choose the file and enter the password allocated when this file was created.

5.2.6 The Bat!

To get your certificate into The Bat! you need to have it in a file in the .p12 format. If you created your certificate in the LIR Portal, please refer to Appendix A1.2 for instructions on how to backup your certificate in this format.

In The Bat! select   "Account" -> "Properties".
Select   "Edit Personal Certificates".
Select   "Import".
Select   "View".
Select   "Add to Address Book".
Select   "Certification Path"   (from the View window).
Select   "Add to Trusted" (to add the root certificate to the Trusted root CA certificates).
In   "Account" -> "Properties" -> Options   make sure that the   "Enable S/MIME"   box is checked.

5.3 Apple Mac Mail Clients

5.3.1 Lotus Notes

The configuration process for Apple Mac is the same as for Windows, except that on the main menu the security settings are under "Notes" instead of "File".

5.3.2 Mail

With the basic OS X operating system S/MIME is not supported in Mail. From the documentation available it appears to be supported in the OS X Panther operating system version of Mail. We do not have this installed and there are no free/demo versions available for us to test.

5.3.3 Mulberry

The configuration process for Apple Mac is the same as for Linux.

5.3.4 QuickMail Pro

This does not support S/MIME at all and there do not appear to be any plans to add support in the near future.

6. Precomposed Mail Messages

Key to Operations

VOS  -  Valid Opaque Signature
VCS - Valid Clear Signature
VE - Valid Encryption
IOS - Invalid Opaque Signature
ICS - Invalid Clear Signature
IE - Invalid Encryption

The numbers under the operations headings indicate the order of operations carried out when preparing the message.

Table of Signatures and Encryption Used

TEST
NUMBER
OPERATION FILE
NAME
VOS VCS VE IOS ICS IE
1 1 vos
2 1 2 vos-ve
3 1 2 vos-ie
4 1 vcs
5 1 2 vcs-ve
6 1 2 vcs-ie
7 1 ve
8 2 1 ve-vos
9 2 1 ve-vcs
10 1 2 ve-ios
11 1 2 ve-ics
12 1 ios
13 2 1 ios-ve
14 1 2 ios-ie
15 1 ics
16 2 1 ics-ve
17 1 2 ics-ie
18 1 ie
19 2 1 ie-vos
20 2 1 ie-vcs
21 2 1 ie-ios
22 2 1 ie-ics
23 2,3 1 ve-vos-vos
24 2 1 3 ve-vos-ios
25 3 1 2 ve-ios-vos
26 1 2,3 ve-ios-ios
27 2,3 1 ve-vcs-vcs
28 2 1 3 ve-vcs-ics
29 3 1 2 ve-ics-vcs
30 1 2,3 ve-ics-ics



7. Mail Clients Selected for Testing

Table of Selected Mail Clients
Platform: L = Linux, W = Windows, M = Apple Mac

Platform Client Source Availability
W Microsoft Outlook Express Comes with the operating system
W Microsoft Outlook Comes with the MS Office
W The Bat! http://www.ritlabs.com/the_bat/ commercial
W Eudora http://www.eudora.com/ free
LWM Lotus Notes http://www.lotus.com commercial
LWM Mozilla http://www.mozilla.org/ free
L Evolution http://www.ximian.com/products/evolution/ commercial
LW Novell NetMail http://www.novell.com commercial
L Sylpheed http://sylpheed.good-day.net/ available under GPL
M Apple Mail Comes with the operating system
LWM Mulberry http://www.cyrusoft.com/mulberry/ commercial
L Pine http://www.washington.edu/pine/ free
L Mutt http://www.mutt.org/ free
WM QuickMail Pro http://www.cesoft.com/products/qmpro.html commercial



8. Conclusion

From our tests we can say that there are a range of freely and commercially available mail clients available for all three platforms that will support S/MIME messages. Unfortunately we do not have the time or resources to test every mail client used by our members. Although the testing itself is short and quick, researching, installing and configuring some mail clients can be a lengthy process.

We would therefore appreciate any assistance from users of other mail clients. If you can confirm if a particular mail client will send and/or receive S/MIME signed and/or encrypted messages, we can add them to our test results. We would also appreciate some notes on any additional configuration that was necessary.

Please send any information or questions regarding this survey to <db-help _at_ ripe _dot_ net>.

Appendices

A1. Generating a Certificate

A1.1 Generating a New Certificate

If you need a certificate log onto the LIR Portal.
Select   "X.509 PKI".
Select   "Root Certificate" to download the root certificate if you have not already done so.
Select   "Generate".
Select which type of browser you are using.
Select   "2048(High Grade)".
Select   "Generate Certificate".
A new certificate is now generated.

A1.2 Backup of Your Certificate to a File

In order for many mail clients to use your certificate you must import it into the mail client's certificate store. To do this your certificate is required in a file in one of two formats, .p12 or .pem.
The .p12 format file can be created from your browser, for example Netscape/Mozilla.

From your Netscape/Mozilla browser window select:   "Edit" -> "Preferences" ->"Privacy & security (Certificates)".
Select   "Manage Certificates".
You will see your certificate under the "Your Certificate" tab.
Select this certificate by single clicking on it.
Select   "Backup"   to save it to a file in the .p12 format.
It will ask for the master password used when the certificate was created.
It then asks for a password to protect the backup file (this can be the same as your master password if need be).
Then use "openssl pkcs12" to create the .pem format file.

openssl pkcs12 -clcerts <cert_backup.p12 >cert_backup.pem
It will ask for the backup file password, then for a new password for the .pem format of the file. (again this can be the same password).

B1. Mail Client Lists

B1.1 From the Tickets

22281  Microsoft Outlook Express
8708 MIME-tools (Entity )
6987 Internet Mail Service
2325 The Bat!
2069 Eudora
1171 Lotus Notes
924 Mozilla 4
793 Mozilla Windows
727 Ximian Evolution
720 AOL for Windows
597 Sylpheed
569 eGroups Message Poster
411 ELM
306 JMail by Dimac
279 Novell Groupwise
223 Mulberry
192 XFMail
188 KMail [version ]
183 MIME::Lite
176 SquirrelMail
129 TeamWARE Connector for MIME
129 CommuniGate Pro
125 Apple Mail ()
125 EXMH
102 Foxmail
84 T-Online eMail
77 <IMail v>
61 Open WebMail
57 Pegasus Mail
56 iPlanet Webmail
55 PINE on Linux
51 TFS Secure Messaging /320000000/460000103/460200035/460820098/
51 IncrediMail 2001
50 PHP/
49 iPlanet Messenger Express
47 Cerberus (ver. ) by WebGroupMedia.com
47 QuickMail Pro (Mac)
46 Becky! ver.
46 Mutt
42 QuickSender
39 FoxMail beta 2 [cn]
38 mPOP Web-Mail
37 WorldClient
36 UUMunger (c) 1998 UUNET, A WorldCom company
36 FoxMail Release [cn]
36 Version Build 113
35 Opera build 1140
34 PINE vi-enhanced for FreeBSD
33 GoldMine []
30 Microsoft CDO for Windows 2000
30 LatinMail v -- http://www.latinmail.com.com
30 DBM v
29 <SMTP32 v20020515>
29 AngleMail for phpGroupWare (http://www.phpgroupware.org) v
28 Perl5 Mail::Internet v
26 jpfree Group Mail Express V
26 Perl script "refermail"
25 Avensoft Mailer
24 WebMail Version
24 MAILOBJECT V
24 Mail Warrior 2
23 Netscape Webmail
22 Kana
21 InterChange (Hydra) SMTP v
20 MailXSender
19 NeoMail
19 EZ-Zender
19 Endymion MailMan Standard Edition v
19 MailOut SN-Code: unregistriert
19 WWW-Mail (Global Message Exchange)
17 DTMail
17 MH (GNU Mailutils )
17 www.virtusales.com
16 Forte Agent
16 Sent by kcom.com IP Operations - Leeds, UK Server
16 Unknown (No Version)
16 Turnpike Integrated Version U <7BiAomRdj8KB0L6Vd08o5SzdCI>
15 Atlas Mailer
15 Juno
15 Message sent on behalf of client: alansis1
15 Mozilla Mac
15 Version Build 101
13 TFS Secure Messaging /222000000/223031087/223005307/223084945/
13 Version Build 219
12
12 Pine.BSF.
12 PMMail 2000 Standard () For Windows 2000 (;2)
12 Mail/@ [v BSDI]
12 GoMail
11 JiXing V DesignBy JohnnieHuang
11 Talkmailino under SMAILER IV (C) 2001 Web2000 Company
11 Sam Spade
11 Microsoft Internet Mail
11 VisNetic MailFlow
11 SuperMail-2
10 AspMail (SMTP6F169C)
10 Pine.LNX.
10 TWIG
10 {%xmailer%}
9 ravmd/
9 Mozilla
9 CSM
8 FC'2000! (vq)
8 fastmail [version PL3]
8 SuSE Linux Openexchange Server 4 - WebMail
8 AspMail (SMT4BB812F)
8 Datamatix Server;
8 PMMail a For OS/2
8 -XP/NG [Jun 12 2003, 07:21:03]
8 MBM v-DE
8 MailCity Service
8 X-Mailer:
8 Pine.GSO.
8 MOMENTUM ( build(8) [Asynch])
8 UebiMiau
8 PMMail 2000 Standard () For Windows 98 ()
8 Volny.cz Webmail2
7 Gordano Messaging Suite v
7 Perl5 Mail::Internet v,NetGate Ticketsystem
7 Microsoft CDO for Exchange 2000
7 Produced By Micro-Look-Expresso v.DTP
7 Cerberus (ver. -rc10) by WebGroupMedia.com
6 Evolution/-5mdk
6 Openwave WebEngine, version (webedge20-101-183-105-20021108)
6 for Windows sub 10626
6 Arclab MailList Controller (I)
6 Calypso Version (4)
6 KANA Response
6 EBT Reporter v 2.x
5 Caretop 2604
5 OTRS Mail Service ()
5 Roving Constant Contact .Patch620.P620_FWTF_01_29_03
(http://www.constantcontact.com)
5 PMMail 2000 Professional () For Windows 2000 (;3)
5 Mew version b124 on Emacs / Mule (HANANOEN)
5 Version
5 MMS(V3)-Mailer
5 AT&T Message Center Version 1 (Nov 5 2002)
5 XMailer-2002
5 EhooPost 2002c
4 Calypso Version
4 PObox II beta
4 <SMTP32 v20010131>
4 Masrawy Web Mailer V
4 MOMENTUM ( build(2) [Asynch])
4 Mailer superb
4 PMMail 2000 Professional () For Windows 98 ()
4 for Windows sub 10637
4 <SMTP32 v980629>
4 EMUmail
4 for Windows sub 6014
4 Z-Mail
4 for Windows sub 10502
4 for Windows sub 10630
4 USANET web-mailer (34FM.)
4 AK-Mail
4 WC Mail
4 PHPBulkEmailer http://www.nukedweb.com/
4 for Windows sub 230
4 StormPost
4 Bulk Mail Sender
4 arda9
4 Perl5 Mail::Internet v
4 JSGSoft.com DatenbankMailer
3 Perl Mail::Sender Version Jan Krynicky
<Jenda _at_ Krynicky _dot_ cz> Czech Republic
3 SKYRiXgreen
3 ariddfatha
3 Shizzel Mailzer
3 IceWarp Web Mail
3 Netscape6/b1
3 AtMail Corp - http://webbasedemail.com/
3 Sage Mailer
3 Microsoft CSS 2000
3 americasnet.com - Autoresponder
3 mail2sms / v 17:16
3 <SMTP32 v>
3 Earthlink Web Access Mail version
3 <SMTP32 v20011130>
3 Dynamic Mail Communicator
3 for Windows sub 6011
3 MOMENTUM ( build(11) [Asynch])
3 Sexy Bummer 31337 (the one and only)
3 Noavar
3 QuickMail Pro (Windows32)
3 CSM
2 Mail::Mailer[v] Net::SMTP[v]
2 for Windows sub 10618
2 9SHY3mxImeen5G8ADWRuVSc1
2 Pine.SOL.
2 CompuServe for Windows US sub 10503
2 T-Mailer (v) Pro
2 MMailer v
2 DvISE by Tobit Software, Germany (C464B4D4B514F)
2 Gnus v/XEmacs - "Capitol Reef"
2 miJMYoy5O71vGjXqvwb15K
2 Gnus v/Emacs
2 Mail Bomber
2 gi tatyce 1-7-03 tatyce
2 for Windows sub 10634
2 *** Phoenix PH2000 v ***
2 SxgDKbRCagItdNBgFZms0hx1Ha
2 McSyn Mailer Pro
2 5Ui0CBXiqMman4QwCzfvUGtsS6
2 Easy Mass Mailer
2 nexxmail [linux]
2 fastmail [version ME+ PL60 (25)]
2 <qhz0oluCulsh1qhw>
2 Macro Express
2 tZuZikau6uoC7Twvc4gm
2 JiXing mailer V Design By JohnnieHuang
2 Enterprise Webmail
2 phpmailer [version ]
2 for Windows sub 10512
2 Ning Moing Oin
2 The Poem-Direct Mailer
2 3myVc02m1Ez14UEg7
2 Gnus/ (Gnus v) XEmacs/ (Academic Rigor)
2 Webmail Mirapoint Direct -GA
2 DvISE by Tobit Software, Germany (B4B4C474E5253)
2 For Shizzelsuper
2 Yamail [ http://yandex.ru ]
2 Gnus/ (Oort Gnus v) XEmacs/ (Terspichore)
2 annmarie
2 X-Mailer
2 gJ9xvl96Q3EXka5Q3r6
2 QskrJ1fI8EJ1WCXbMfQPj
2 Caramail - www.caramail.com
2 AOL for Mac sub 39
2 Incipience/Webmail (version SM/)
2 FeLaMiMail version
2 Calypso Message Center Server Version
2 Working Families WebMail
2 Message sent on behalf of client: yoffers
2 clwYQHqnHLeHkwNlP3KiYEsi4L
2 eWaOcvxFRfqFDGt4iT
2 DdiE4tfbIS3Km1c9GJlkS
2 arden235235252e
2 NOCC v-dev
2 Oracle InterOffice (version )
2 55ME5Hkfm6xPh76Ci2w2fSxp0E
2 jp
2 EMUmail
2 Mailer Supuh
2 XPhAzJ014nQ3T6V1
2 gavin V
2 supah mailer
2 bcLgaZuEFxkvs6
2 GPAC Gypsy d
2 ListManager Web Interface
2 W0W2bDB2xsanrAZrQmIbN
2 wtPosta Web Based Mailer By Kriweb
2 AL-Mail32 Version
2 s0c3l4
2 <WinNT's Blat ver >
2 PObox II beta
2 yC3IMbPrtMYmFP5ivsSbKuDFCaS
2 arieaflle
2 Calypso Version (1)
2 T Mailer (v) Professional
2 Roving Constant Contact .Patch637
2 Hivemail
2 safelisters
2 X-Mailer: Mozilla [en]C-CCK-MCD (Win98; U)
2 XMailer14=AOL for Windows US sub 118
2 Mew version on Emacs / Mule (HANANOEN)
2 e-MSG.co.uk
2 Beyj (ver. )
2 VisNetic WebMail
2 AOL for Mac sub 7
2 Message sent on behalf of client: alansis2
2 wlZJKRFZ0NXV9UkhzU
2 Suomi Communications 20030425
2 -XP/NG [May 29 2003, 09:13:50]
2 VisNetic MailFlow - Evaluation
2 Cardio Mailer
2 Bulk Email EX
2 Fast Sender v
2 5DvgOpw74arEBaMDTc2U5FZS
2 MIME-Version:
2 1xtzSDTTtZ3UMvJFprF3gfs4
2 gl6FaUojZPDZVgHX1ELrBqf3ItLe
2 areth2a2525
2 gCAEfNKvtrVHyX6
2 for Windows sub 10607
2 BlTjYfn48c5dlndlVqRogzfOk
2 IMP/PHP3 Imap webMail Program
2 anto97nina
2 Pine.SGI.
2 Confixx Autoresponder
2 Webmin
2 NetJunction (NetJunction -p1)/MIME
2 MOMENTUM ( build(18) [Asynch])
2 Arclab MailList Controller [<@ARCLAB@>]
2 VM under Emacs
2 j4mO6TcvZ3OTkKOjEux
2 zlL1WWjAvL465EPMj43zF
2 NTMail v
2 anselma6436
2 Lsgkyi (ver. )
2 CyberCreek Avalanche Millennium The Amber Alert Edition.
2 B-E-Mailer
2 Direct Mail v
2 Gnus/ (Gnus v) Emacs/
2 rndvxjihsembearkncbltmkodwje
2 sub 10512
2 Mailer Signature
1 LycosMail
1 CWMail Web to Mail Gateway c, http://netwinsite.com/top_mail.htm
1 http://www.ProAutoResponder.com v
1 PocoMail (1077) - Licensed Version
1 PowWeb Hosting Webmail v2
1 Execmail for Win32 Build (10)
1 Calypso Evaluation Version (4)
1 email_sender
1 for Windows sub 6012
1 for Windows sub 8000
1 Hot.ee webmail (http://portal.hot.ee)
1 HOME.RO FreeMail v
1 Talisma Mail Version
1 -b55-VC_IPA [Mar 3 2003, 15:15:02]
1 Mail::Webmail (v)
1 Network Associates, Inc. Webshield SMTP, Version MR1a
1 TAL.DE Service Agent
1 MediaG3.com
1 Genesys E-Mail
1 DvISE by Tobit Software, Germany (A4B4C494A474F514F)
1 3C4FAAFF.6C5C1Acfb1d48b7fa81b505a5c55460434f3
1 JAWmail
1 BroadcastHTML DS Mailer
1 IlohaMail/Tru64Unix (On: iloha.atnet.com.al)
1 WebMail
1 DMailWeb Web to Mail Gateway k, http://netwinsite.com/top_mail.htm
1 Lyris Web Interface
1 WorldSSP Ezine Mailer
1 PyMail (Python SMTP class)
1 Flicks Softwares OCXMail a (OCXMail Version a)
1 NOCC v
1 Opera build 1101
1 X-Mailer Gold
1 mnews [version ] 1999-12/19(Sun)
1 Vivian Mail []
1 SinaMail
1 Douhou@Mail version /
1 MBM v-US
1 SMTPBeamer v
1 <SMTP32 v20020313>
1 Roving Constant Contact .Patch647 (http://www.constantcontact.com)
1 Yahoo Groups Message Poster
1 AtMail Isp - http://webbasedemail.com/
1 super-mail
1 Execmail for Win32 Build (10)=20
1 Version Build 123
1 PHP
1 Calypso Version (3)
1 DvISE by Tobit Software, Germany (B49494E464B48494D)
1 My Mailer Version 6081099693714237
1 TFS Secure Messaging /450950013/320610265/400610146/460610146/
1 MH #4[UCI] (Espresso.NEEBU.Net) of Mon Feb 19 15:14:03 EST 1996
1 IPG Responder
1 Dipost Crypto (vC)
1 CSMTPConnection v
1 CTM PowerMail <http://www.ctmdev.com>
1 DvISE by Tobit Software, Germany (A4647474F4951)
1 VM under (patch 3) "Academic Rigor" XEmacs Lucid
1 Mach5 Mailer- PID{7ec7e981-5e91-4942-9706-28e9192f81fe}
1 Bluewin WebMail / BlueMail
1 Web Mail -9
1 mail2sms / v 17:30
1 for Windows sub 235
1 Mailer
1 MarshallSoft SMTP/POP3 Email Engine Version
1 DardaNET Webmail
1 NMSMTP Gescall
1 Junkmail2 (POPstar)
1 CWMail Web to Mail Gateway c, http://netwinsite.com/top_mail.h=
1 MU (FreeBSD )
1 bruno_china
1 <SMTP32 v990217>
1 Microsoft Exchange Server Internet Mail Connector
1 Sergey Dementyev's Mailer Ver
1 Web Mail -0_sol28
1 DvISE by Tobit Software, Germany (B49474D464B51524D)
1 Terrace Webmail [Solaris/SUN]
1 Free WebMail HotBOX.ru
1 Balsa
1 anyone
1 Ukrpost ( Ukrpost:Forever )
1 Atlantis Vulcan v
1 for Windows sub 10641
1 V-69966
1 for Windows sub 670
1 1E86BDD78C3.ce8ac0070362e2b1f63d9df2961ea40c
1 Katamail
1 Internet Anywhere Message Server Version: . Build: 2017
1 POBOX (mico's engine /)
1 for Windows sub 10634</FONT></FONT>=20
1 KKS Online Webmail
1 Openwave WebEngine, version (webedge20-101-190-20021211)
1 Express Plus Version
1 web14908.mail.yahoo.com
1 Req
1 Mach5 Mailer- PID{8870b238-1894-4b26-b78a-cbb2bb766e9d}
1 Roving Constant Contact .Patch609.P609_Lists_03_07_03
(http://www.constantcontact.com)
1 Aol
1 VM under (patch 14) "Cuyahoga Valley" XEmacs Lucid
1 _rc7-XP/NG [Jan 8 2003, 17:14:14]
1 eshare NetAgent v.5,02,027
1 oMail - http://webmail.omnis.ch
1 EarthLink MailBox (Windows)
1 DvISE by Tobit Software, Germany (B4545494650485153)
1 Kyukyoku Multi Mailer Ver.
1 <ulsh0gepCulsh1qhw>
1 e-mailAVS PHP 3206386 Mail list manager
1 PowWeb Hosting Webmail version
1 root eSolutions Webmailer
1 Mirapoint Webmail Direct
1 Super E-Manager, Build
1 Mercury/32 v

B1.2 From the RIPE Database Update Logs

39256  Microsoft Outlook Express
29274 Internet Mail Service
10928 JMail by Dimac
5527 Eudora
5050 The Bat!
4141 Lotus Notes
2040 Ximian Evolution
2018 MIME::Lite
1878 ELM
1874 Mozilla Windows
1682 DTMail
1603 Mozilla 4
1057 Sylpheed
931 cmsjobs
661 Novell Groupwise
597 cgiemail
567 NacamaRob v
458 KMail [version ]
429 Mulberry
351 Netscape Webmail
327 Mutt
314 EXMH
310 XFMail
305 Apple Mail ()
284 CommuniGate Pro
273 fastmail [version PL3]
231 MIME-tools (Entity )
227 Becky! ver.
223 AOL for Windows
215 send_ripe_objects
209 PHP4-Script (www.datenkraft.at)
185 MailIt! for Roxen
170 PHP/
169 eGroups Message Poster
166 iPlanet Messenger Express
137 KPN RIPE mt
137 Perl5 Mail::Internet v
121 WorldClient
114 SquirrelMail
98 TeamWARE Connector for MIME
97 job-process.queue.pl v - (c)2000 Sascha Pollok (sp _at_ iphh _dot_ net)
89 PINE vi-enhanced for FreeBSD
82 Opera build 1140
77 Version Build 101
75 IncrediMail 2001
71 TFS Secure Messaging /320000000/460000031/450230031/462301000/
66 Mail/@ [v BSDI]
65 AK-Mail
62 VM under Emacs
60 sendEmail-
58 Sent by kcom.com IP Operations - Leeds, UK Server
57 QuickMail Pro (Mac)
54 Easy-MAIL v - http://www.mclink.it/
52 <IMail v>
50 mPOP Web-Mail
49 VM under (patch 14) "Cuyahoga Valley" XEmacs Lucid
46 Open WebMail
40 NeoMail
37 PINE on Linux
37 Mozilla
37 Balsa
31 Microsoft Internet E-Mail/MAPI -
30 TAL.DE Service Agent
28 UebiMiau
26 handle-application (SpeedKom GmbH, v 01/03/2002)
26 Mozilla Mac
25 Atlantis Vulcan v
25 Sexy Bummer 31337 (the one and only)
24 Infomex.NET - WebMail
24 iPlanet Webmail
23 UUMunger (c) 1998 UUNET, A WorldCom company
23 FoxMail Release [cn]
22 DvISE by Tobit Software, Germany (C464B4D4B514F)
22 GoldMine []
22 TWIG
21 www.virtusales.com
21 Foxmail
19 WhoisDB Form Mailer v
18 mail (mailutils) c
17 erni-mail [V $ver()]
17 Mew version b124 on Emacs / Mule (HANANOEN)
17 Calypso Version (4)
15 TFS Secure Messaging /320000000/460000103/460200035/460820098/
14 InterChange (Hydra) SMTP v
14 SebS Internal Mailer ()
13 AngleMail for phpGroupWare (http://www.phpgroupware.org) v
13 SuperMail-2
12 Mail/@ [v FreeBSD]
11 Yamail [ http://yandex.ru ]
11 Mew version + on Emacs
11 FoxMail beta 2 [cn]
11 Webmin
11 Req
10 Forte Agent
10 IlohaMail/Tru64Unix (On: iloha.atnet.com.al)
10 QuickSender
9 Ishmail -20001218-i686-pc-linux-gnu <http://ishmail.sourceforge.net>
9 FDATA SMTP ServiceClass
9 Caramail - www.caramail.com
9 Version Build 113
9 Sunerg. Account Manager Ver
9 PHP4
8 wb-ripe-srv1
8 EMUmail
8 DBM v
7 MMailer v
7 Pegasus Mail
7 XIC::RipeDb::update
7 EZ-Zender
7 Mew version on Emacs / Mule (HANANOEN)
7 TCL EMail Library
7 Mirapoint Webmail Direct
6 MEd Version (i386-pc-bsdi)
6 Evolution/
6 POSTIE (Nov 8 1998 13:43:07)
6 CSM
6 {%xmailer%}
6 PMMail 2000 Standard () For Windows 98 ()
6 Allaire ColdFusion Application Server
5
5 VM under "Emerald" XEmacs Lucid
5 BaT
5 BasiliX b -- http://basilix.org
5 Opera build 1041a
5 IlohaMail/ (On: www.emailaddress.nu)
5 DardaNET Webmail
5 Microsoft Internet Mail
5 GoMail
5 root eSolutions Webmailer
4 wissalMail (version )
4 TFS Secure Messaging /222000000/223031087/223005307/223084945/
4 Evolution/-5mdk
4 DvISE by Tobit Software, Germany (C494D4C4B)
4 PMMail 2000 Professional () For Windows 2000 (;3)
4 JAW::Mail jawmail-
4 SKSOFT Ican SMTP Service
4 Kaufman Mail Warrior Final
4 Microsoft CDO for Windows 2000
4 PostMe
4 Version Build 219
4 ** GSPM Mailer **
4 USANET web-mailer (34FM.)
4 for Windows sub 6011
4 MailWorkZ MailEngine Version
4 UWM
4 Rapier v (BSD/OS v)
3 DAFTOOLS
3 OTRS Mail Service ()
3 Centrum Mail
3 WebMail (version [second release])
3 Webmail Mirapoint Direct -GA
3 PMMail 2000 Standard () For Windows 2000 (;2)
3 telematis Webmailer
3 Mail Warrior 2
3 GPAC Gypsy d
3 MU (FreeBSD )
3 I.MAIL
3 Z-Mail
3 POBOX (mico's engine /)
3 for Windows sub 854
3 MH
3 MailXSender
2 Pine.BSF.
2 Necrosoft Outgluk Express for UNIX
2 <SMTP32 v20000614>
2 AJNIbrado/trollmail/pinoymail.com
2 DESIKOM ISAPmail 2 [ger]
2 Datamatix Server;
2 NOCC v
2 DomBase
2 SKYRiXgreen_ NGMime_
2 Webmail Mirapoint Direct -GR
2 Calypso Version (3)
2 Mailer super
2 Message sent on behalf of client: alansis1
2 MailCity Service
2 first3.pl WebMailv. Usluga Poczty Elektronicznej dla o2.pl
2 JiXing V DesignBy JohnnieHuang
2 FARMail v (build 25)
2 <SMTP32 v980629>
2 LatinMail v -- http://www.latinmail.com.com
2 Serverhosting-RIPE-FORM V
2 Unknown (No Version)
2 Messagerie Internet de Microsoft/MAPI -
2 Free WebMail HotBOX.ru
2 Endymion MailMan Standard Edition v
2 DenMail v by ORC
2 WWW-Mail (Global Message Exchange)
2 Nimda Notifyer
2 QuickMail Pro (Windows32)
2 www.webmail.nl.demon.net
2 MailWorkZ Version
1 tommy V
1 LycosMail
1 XLv2pwNXq9gEQranDh2iNIL
1 Atlas Mailer
1 Qaec (ver. )
1 Cvkddcghgp (ver. )
1 Rpytbtx (ver. )
1 Interfejs WWW poczty Wirtualnej Polski
1 Hpjcvaohgnk (ver. )
1 AOL Communicator Preview Release ()
1 Execmail for Win32 Build (10)
1 abbsmail/
1 EepadMail
1 PMMail 2000 Standard () For Windows 2000 (;1)
1 Hwcqrjlihe (ver. )
1 email_sender
1 Pcyeevhp (ver.
1 Ob (ver. )
1 Bffwyfkyhrj (ver. )
1 0d52dKHdWWgBUkUm5DgKvZ8E3dEX
1 SKYRiXgreen
1 HagK s spoofing Mail client on tuxmobil
1 Hhnlzgv (ver. )
1 Xhubpbxbme (ver. )
1 Mail Bomber
1 9TmfXYfAkUf2g5SDsHUUpB
1 Hwjpal (ver. )
1 Bstikhmejw (ver. )
1 Trade-Navigator [CN]
1 Qsk (ver. )
1 T-Online eMail
1 IMEdwgPpco45Zkf
1 Evolution/ (Preview Release)
1 fNhkQszwCA7os5NzdGTkMEeBC7qf
1 Vbs (ver. )
1 1TdBxXEOy8iaSbp7qTiCxqMJYIM2P
1 nexxmail [linux]
1 dw8fkdXIdknaktVvjRivLbAqn4lvs
1 Ag (ver. )
1 AspMail (SMT4BB812F)
1 FastMailer/Webmail (version SM/)
1 Web X-Mail
1 info _at_ goodfit _dot_ net
1 5ToicuO1V33OCr94eqkEzmiQmt
1 Givmlyv (ver. )
1 ravmd/
1 Ydt (ver. )
1 2oLJ07qLW1EkcpJNxtOL2oI
1 Agonet Webmail
1 Dajbl (ver. )
1 zdflW1XjKuGL82fFMCAA
1 Vckq (ver. )
1 The Poem-Direct Mailer
1 Apy (ver. )
1 Idilis WebMail 20030416
1 Gnus/ (Gnus v) XEmacs/ (Academic Rigor)
1 CSFNet WebMail 20030325
1 Gmmbd (ver. )
1 Hjygrx (ver. )
1 Gnus/ (Oort Gnus v) XEmacs/ (Terspichore)
1 mail.zp.ua vEXPRESS mail
1 pLzIGnTCRPXZu1GkpDSyEM8w6aU
1 fdgdfgggggggggg44hdh
1 Ugthpitprek (ver. )
1 Mailer superb
1 Gclngzyrldf (ver. )
1 WebMail Version
1 AOL for Mac sub 39
1 Incipience/Webmail (version SM/)
1 Gxbnbyujj (ver. )
1 MailGate v
1 MERCUR-WebView (v)
1 EARN $6,000 A WEEK FROM HOME
1 U5xXCV6X9WukxLYDXpsGZtG
1 OdYpemeOxUpAU9Af
1 Hxocbgdc (ver. )
1 Mailer Supuh
1 O4yu9QeTGytxwv1
1 gavin V
1 Bxencuvlkm (ver. )
1 Web Mail -9
1 Bulker
1 for Windows sub 235
1 Web Mail -4_sol28
1 oPSV3o4TNJKIZmYOLiAj6GJ
1 Xezi (ver. )
1 Ig (ver. )
1 Inbox Mailer (http://www.inbox.net)
1 Bdaoyvz (ver. )
1 Hhc (ver. )
1 Npkr (ver. )
1 Dinonet WWW E-Mail Service based on AtDot
1 ardyc2 5e5
1 STRATO-Webmail.de, powered by PHlyMail LE, http://phlymail.com
1 ZapoWebMail [Version ]
1 Message sent on behalf of client: alansis2
1 Bjxhmvuz (ver. )
1 Pcqfuv (ver. )
1 Znnwqisjdf (ver. )
1 soJ6TdMBACOyWczOsfiWzz8OpQI
1 4sdioNfn1WZ7ZvOdr
1 FoxMail [cn]
1 Cardio Mailer
1 Brr (ver. )
1 Roving Constant Contact .Patch653.Patch_653_ConfirmedOptIn_06_13_03
(http://www.constantcontact.com)
1 Optin Mailing
1 Stjfceqdf (ver. )
1 Ukrpost ( Ukrpost:Forever )
1 Version
1 Jqwtoetonxw (ver. )
1 IMHO/ (Webmail for Roxen)
1 Uxiekfwdl (ver. )
1 IMP/PHP3 Imap webMail Program
1 Xfv (ver. )
1 Mailreader.com v (2001-07-20)
1 Ke5BuXiteEuG8ecFdJANbdVhY
1 NetJunction (NetJunction -p1)/MIME
1 cha8Yatpvag8DZUZlth25LsBnXc
1 PHP/FI pl2
1 Luxadmin.org Webmailer
1 Bvorci (ver. )
1 arlettejlwethlhlhjljk
1 XMailer10=Internet Mail Service ()
1 Eircom Net CRC Webmail (http://www.eircom.net/)
1 Noavar
1 freemail
1 oMail - http://webmail.omnis.ch
1 Lsgkyi (ver. )
1 wigWMMvRTI5HX673So9u5wz8KocMj
1 Xyryrwsnor (ver. )
1 Mercury/32 v
1 Qaoo (ver. )