Postfix greylisting: Difference between revisions
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And my logs look like this: | And my logs look like this: | ||
<pre> | <pre> | ||
Oct 17 16: | Oct 17 16:16:32 localhost postfix/smtpd[32484]: connect from unknown[201.226.226.55] | ||
Oct 17 16: | Oct 17 16:16:35 localhost postfix/smtpd[32484]: NOQUEUE: reject: RCPT from unknown[201.226.226.55]: 450 <rday@finninday.net>: Recipient address rejected: Greylisted for 300 seconds (see http://isg.ee.ethz.ch/tools/postgrey/help/finninday.net.html); from=<lingrossfastenrathmet@grossfastenrath.de> to=<rday@finninday.net> proto=ESMTP helo=<auditoria01.cwpanama.net> | ||
Oct 17 16: | Oct 17 16:16:35 localhost postfix/smtpd[32484]: lost connection after DATA from unknown[201.226.226.55] | ||
Oct 17 16: | Oct 17 16:16:35 localhost postfix/smtpd[32484]: disconnect from unknown[201.226.226.55] | ||
</pre> | </pre> | ||
My Bayes filter might get rusty from lack of use now. Hardly anything is persistent enough to get through the greylist. | My Bayes filter might get rusty from lack of use now. Hardly anything is persistent enough to get through the greylist. | ||
Revision as of 23:21, 17 October 2007
On a lark, I decided to implement greylisting on my mail server. It was as easy as "apt-get install postgrey". Well, almost that easy. I also had to add this to my /etc/postfix/main.cf:
check_policy_service inet:127.0.0.1:60000
This was slipped in at the end of smtpd_recipient_restrictions.
Now I have a new service in /etc/init.d: postgrey
And my logs look like this:
Oct 17 16:16:32 localhost postfix/smtpd[32484]: connect from unknown[201.226.226.55] Oct 17 16:16:35 localhost postfix/smtpd[32484]: NOQUEUE: reject: RCPT from unknown[201.226.226.55]: 450 <rday@finninday.net>: Recipient address rejected: Greylisted for 300 seconds (see http://isg.ee.ethz.ch/tools/postgrey/help/finninday.net.html); from=<lingrossfastenrathmet@grossfastenrath.de> to=<rday@finninday.net> proto=ESMTP helo=<auditoria01.cwpanama.net> Oct 17 16:16:35 localhost postfix/smtpd[32484]: lost connection after DATA from unknown[201.226.226.55] Oct 17 16:16:35 localhost postfix/smtpd[32484]: disconnect from unknown[201.226.226.55]
My Bayes filter might get rusty from lack of use now. Hardly anything is persistent enough to get through the greylist.