Single IP spammed involves whole AS ?

["Valerio Natale" <]

Dear all,

I'm new to this working group, therefore please excuse my silly question and
forgive me if it's a repost.
One of our customers's  mail server (using obviously one of our IPs) was
caught to have open relay that has transmitted spam to different users.
We threatened him to stop this immediately but - meantime - my questions are
these:

1)Does the single IP involves being listed in a "black list" as entire AS
(it does not seem so, at least in the webstite that notified about this:
http://www.mail-abuse.org/cgi-bin/nph-rss ) ?

2)Do you have a list of sites that have black lists over this matter ?

Many thanks for your eventual help.

Regards,
Valerio

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Valerio Natale

Blixer S.p.A.
Via A. Fava, 20
20125 Milano - Italy
Tel. +390267483223
Fax +390267483233
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