Problem with MailScanner, postfix and corrupt mails

Julian Field MailScanner at
Mon Mar 28 18:48:55 IST 2005

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Dean Jones wrote:

> Julian Field wrote:
>> Can you give us more details on the Cyrus problem you had? Would be
>> worth adding this to the FAQ to help other people.
> Ok, i'll throw some more details out at the cost of embarrasing myself ;)
> Basically on my solaris boxes i compile stuff from scratch.
> so for my mailscanner system i compiled:
> cyrus-sasl, openssl, perl, berkely db, postfix and a bunch of other
> non-related stuff.
> I had set up postfix first and tested the TLS stuff (which is why i
> needed cyrus-sasl and openssl to compile TLS into postfix) and the TLS
> stuff was working.
> but during my setup of MailScanner i had changed which user postfix runs
>  as and that user didn't have permission to read the cyrus-sasl
> libraries. (doh)
> I'm not 100% sure of the next part but it seemed a very small percentage
> of MailScanner messages require that library for some reason??
> So i was debugging MailScanner to check out some spamassassin rules i
> had created and on one of the debug attempts i noticed there was an
> error accessing that sasl library.
> It looked like a rather ugly error as well.
> so i just gave the mailscanner/postfix user read access on the libraries
> and that problem went away.
> And since that point there have been no corrupt mails but that might
> just be coincidence?

Please let us know if you see any more corrupt mails, or whether your
fix continues to solve the problem.

Julian Field
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