[anti-abuse-wg] Mimecast.com

Mimecast’s chief scientist is Nathaniel Borenstein - who originally wrote the MIME spec.

They are legit.  I am not sure what is going on here.

> On 04-Nov-2015, at 1:14 PM, andre at ox.co.za wrote:
> 
> Hello,
> 
> Has anyone of you had much/any dealings with this crowd: Mimecast.com ?
> 
> Less than 1% of our email volume exchanges with them, and yesterday
> after complaining about abuse/UBE from them and receiving no response,
> escalated to @telstra and then all of a sudden they are returning all
> email in a loop:
> 
>  support at mimecast.com
>    host service-alpha-inbound-b.mimecast.com [91.220.42.231]
>    SMTP error from remote mail server after end of data:
>    554 Email rejected due to security policies -
>    https://community.mimecast.com/docs/DOC-1369#554
> 
> Then, when I email them from a different server, it goes through the
> first time and viola, the second email, same block, on the "new" server"
> 
> From their website: They provide email filtering services, this feels
> like they are extorting money from me, which I will not pay of course.
> 
> But, have any of you had any similar experiences? As they are
> providing this type of "service" to some of our @gov departments
> as well as other large companies, I will have user blowback - what
> do I tell my users? We are blocked because we dared complaining? 
> or we are blocked because we do not pay?
> 
> any advice will be appreciated, obviously this type of behavior breaks
> email and the larger the "protectors" become, the more control they
> have...
> 
> tia
> 
> andre 
> 
>