postfix-users October 2010 archive
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postfix-users: Re: Postfix locking up, not accepting connections

Re: Postfix locking up, not accepting connections / smtp not sending emails out

From: <lst_hoe02_at_nospam>
Date: Fri Oct 29 2010 - 15:43:33 GMT

Zitat von Christian Rohmann <>:

> Hey postfix-users,
> we are currently analyzing very strange postfix behavior which I can
> only describe as lockup or freeze.
> Honestly we reached our abilities to gather more info and to find the
> root cause of this issue.
> You are my last hope obi wan ... eh Wietse ....
> --- Setup / Configuration ---
> We are running three VMware ESX 4.1 guests (multiple VMware hosts) with
> Debian Lenny amd64.
> Each machine has 8 virtual CPUs and 4GB of RAM. We are using the Debian
> lenny postfix package (2.5.5) and now moved up to 2.7.1 which we
> backported (problems remained unchanged).
> Each instance of postfix recieves about 200-300 mails/minute. The mail
> addresses of the incoming emails are checked using a relay_recipient_map
> (proxymap + mysql) are rewritten (domain is changed) and then relayed
> using a transport map towards a multi-A record containing two IPs.

Maybe another instance of this problem?