From: Wietse Venema (wietseporcupine.org)
Date: Thu May 01 2003 - 12:06:42 CDT

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David Alexander:
> >From: wietseporcupine.org (Wietse Venema)
> >Subject: Re: Deferred mail when aliased to a script
> >
> >Try: default_process_limit=2 in main.cf
>
> Ok, I've made this change, as well as upgraded to Postfix 2.0.9,
> and am still having the same problem.
>
> Under the new postfix version, I'm also seeing logs like the following:
>
> May 1 11:11:34 util001 postfix/local[79956]: warning: fork: Resource temporarily unavailable

Someone was debugging a problem so I added warning messages to help
them.

> I do not believe system load to be an issue here. System load
> has been noted to be below .25 during this behavior. For reference,
> this is a dual-processor IBM RS/6000 (F50) running the multi-processor
> kernel, AIX version 4.3.3, and the box is not especially taxed.

The fork() call is executed while the process runs with "postfix"
privileges. Perhaps there is some system-imposed per-user process
limit that it runs into.

However, I would like to avoid changing Postfix so it does more
things as root. Such would appear to be the way of Sendmail.

        Wietse

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