From: Victor Duchovni (Victor.DuchovniMorganStanley.com)
Date: Mon May 02 2005 - 17:49:46 CDT

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On Tue, May 03, 2005 at 12:25:07AM +0200, Roy-Magne Mo wrote:

> postfix/smtp[1942]: panic: vstream_buf_alloc: unable to extend
> fixed-size buffer
>
> postfix/smtp[2225]: panic: myfree: corrupt or unallocated memory block
>
> postfix/qmgr[16054]: fatal: bad extra offset file active/A/AC46A3394C7
> postfix/master[2915]: warning: process /usr/libexec/postfix/qmgr pid
> 16054 exit status 1
> postfix/smtp[16025]: panic: myfree: corrupt or unallocated memory block
>
> Cleaning up the queue from spam, and a couple of tries with postsuper -r
> ALL seems to loosen up the queue.
>

The above symptoms are *severe*. Do not just sweep them under the rug.
Configure the system with sufficiently low process limits to avoid
running out of memory. Identify and Fix any hardware issues, and make
sure your Postfix software is the latest patch level for its release
(1.1.13, 2.0.20, 2.1.5 or 2.2.3, but at this point anything older than
2.1.5 is questionable).

Postfix does not run this broken on other systems.

--
        Viktor.

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