Traffic from port 25 to high ports?From: Matt Simonsen (email@example.com)
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Message-ID: <3BB35240.firstname.lastname@example.org> Date: Thu, 27 Sep 2001 09:22:24 -0700 From: Matt Simonsen <email@example.com> To: firstname.lastname@example.org Subject: Traffic from port 25 to high ports?
I am seeing traffic regularly coming from remote servers' port 25
destined to our servers' high ports, generally in the 1-3k range. Is
this normal? I plan to block it all, from what I understand SMTP goes
only from 25 to 25, but if that's the case I can't figure out what this
According to our IPFilter logs the traffic generally has -AFP set,
please let me know off-line if a tidbit of info I could provide can help
you answer my question.