On Wed, Apr 05, 2006 at 10:34:30AM -0500, James Medley wrote:
> Hello All,
>
> Lately my mail queue has been getting a much higher number of queued
> messages, mainly from spam. Apparently someone is sending spam and
> using my server as a return address. This has in turn stopped some of
> our legitimate mail from going through and some showing a reason as
> temporarily greylisted. I am running sendmail 8.12.9/ qpopper 4.0.5
> on a Mac G4, OS 10.2.8. If someone can please point me in the right
> direction I would appreciate it.
Greylisting MEANS that mail from your site [or any site] is temporarily
not accepted. When your mail site tries again, it will be accepted by
the recipient site. This works because Spam sites typically do not try
again.
This is not directed towards you, and probably has nothing at all to do
with the spam you are receiving, and everything to do with the spam the
recipient sites are receiving.
If it is vital that mail from your site gets to the recipient site
immediately, you must contact the recipient site and ask them to
whitelist you.
IF what you mean is that Spam sites are using you as a third-party
relay, then for heaven's sakes, turn off third-party relaying!!! ;-)
Please see also:
<http://projects.puremagic.com/greylisting/>
<http://hcpnet.free.fr/milter-greylist/>
<http://www.postfix.org/SMTPD_POLICY_README.html>
[Google is your friend!]
--
Joe Yao
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