SLUG Mailing List Archives
Re: [SLUG] Sendmail - Spamming Problems
- To: Steven Kerr <linux.com@xxxxxxxxxxxx>
- Subject: Re: [SLUG] Sendmail - Spamming Problems
- From: Mike Holland <myk@xxxxxxxxxxxxxxxxxxx>
- Date: Thu Feb 8 13:32:01 2001
- Cc: "slug@xxxxxxxxxxx" <slug@xxxxxxxxxxx>
On Thu, 8 Feb 2001, Steven Kerr wrote:
> I have noticed over that last few days that some slime ball is using
> our sendmail 8.9.3 mail server as a relay.
Unlikely ... 8.9.3 disables such relaying, unless you specifically enable
> Feb 7 10:15:13 gatekeeper sendmail: KAA16323:
> from=<pr@xxxxxxxxxxx>, size=702, class=0, pri=30702, nrcpts=1,
> msgid=<200102062315.KAA16323@xxxxxxxxxxxxxxxxxxxxxxxxxx>, proto=ESMTP,
> relay=localhost [127.0.0.1]
That looks normal - it just describes incoming mail. Presumably spam sent
to your system. It doesnt mean its relaying back out.
Do you see any evidence of spam being forwarded back out by your system?
> So I assumed that the spammer is using the address 127.0.0.1
No, thats just means that localhost is receiving the mail.
> Question: What other configuration could I use to stop this spamming ?
See the sendmail docs, e.g.:
QUESTION: How can I do spam-filtering in sendmail when calling it from
'fetchmail' ? Has anyone done this? Normal methods dont seem to work.
Mike Holland <mike@xxxxxxxxxxxxxxxxxxx>
It is always the best policy to tell the truth, unless, of course,
you are an exceptionally good liar. -- Jerome K. Jerome