My server is getting a lot of spam that appears to be claiming it's from my
domain while it's from elsewhere:
Received:
from my.ip.addr.ess (124-12-9-193.static.tfn.net.tw [124.12.9.193])
by mydomain.com (Postfix) with SMTP id 56BEC6010B for <[email protected]>;
Thu, 17 Sep 2009 02:55:54 -0600 (MDT)
Received:
from iedfmwp.yahoo.com (iedfmwp.yahoo.com [179.232.190.108]) by
with Microsoft SMTPSVC(5.0.2195.6824); Sat, 13 Apr 2002 10:35:17 -0100
How
can I block these? I've been reading, searching, and configuring quite
a bit, but can't figure out how to block these so they're not accepted
(for relaying?). Here's what I have in Postfix's config:
smtpd_client_restrictions = reject_unknown_client_hostname,
reject_unauth_pipelining,
reject_rbl_client zen.spamhaus.org,
reject_unknown_reverse_client_hostname
smtpd_recipient_restrictions = permit_sasl_authenticated,
reject_unauth_destination
I also tried changing mynetworks to 127.0.0.1 but that hasn't helped with this.
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