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Old 11-19-2009, 07:01 AM   #1
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Registered: Aug 2004
Distribution: Debian Etch
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postfix - postgrey - lost connection after RSET


I'm using debian 4.0r6 / postfix / postgrey ...

This works really fine for 99+% of emailsenders

From time to time I get

Nov 11 09:01:54 grey2 postfix/smtpd[28926]: lost connection after RSET from unknown[]

What does that mean, can I prevent it on my machines or is it a "someone elses problem"?


Last edited by JackDante; 11-19-2009 at 07:02 AM.
Old 11-20-2009, 02:50 PM   #2
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Location: Louisville, OH
Distribution: Debian, CentOS, Slackware, RHEL, Gentoo
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Try this... (from the machine)

telnet localhost 25
helo localhost
mail from: <youremailonthisdomain>
rcpt to: <youremailonthisdomain>
It's not really a problem, but based on the return of the rset you should be able to get an idea of what is happening, your server may be denying them a rset and they're dropping connection (spammer), it could be issuing a reply that is non-standard (your problem), etc.

Last edited by rweaver; 11-20-2009 at 05:10 PM.
Old 11-25-2009, 08:42 AM   #3
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Registered: Aug 2004
Distribution: Debian Etch
Posts: 15

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tried it:

grey2:~# telnet localhost 25
Connected to localhost.
Escape character is '^]'.
220 ESMTP Postfix
helo localhost
mail from:
250 2.1.0 Ok
rcpt to:
250 2.1.5 Ok
250 2.0.0 Ok
221 2.0.0 Bye
Connection closed by foreign host.

I can't see no problems here.

Most other mailservers work fine, I only know of two mis-behaving. For a start I whistlisted them, but thats of course no solution for not know delivery failures...

Many Thx

Last edited by JackDante; 11-26-2009 at 02:30 AM.


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