MailScanner vs. Amavisd

[Pete]

Just on the Postfix stuff, there is a another way ...

Julian can you comment on the HOLD method vs 2 Postfix instances method
? Seems many people dont realise there is an alternative or which is
'better' to use with MS ?



Muenz, Michael wrote:

>>>Since you seem to be one of the biggest users oif both systems, any
>>>chance you could provide a side by side comparison chart of the features
>>>of both systems?
>>>
>>>
>
>Here's a short comparison from the amavis list:
>
><quote>
>Mailscanner does not support daemonized virus scanners, however, while
>amavisd-new does.  This is apparently a conscious decision on the part of
>Mailscanner's author, who does not believe that daemonized virus scanners
>are more efficient than command-line scanners in this context.  Instead,
>Mailscanner tries to optimize the use of command-line scanners by scanning
>mail in "batches", rather than one at a time.  The author's explanation can
>be found in the FAQ at
>http://www.sng.ecs.soton.ac.uk/mailscanner/faq.shtml#22
>
>I've read posts in this and other forums that suggest that Mailscanner may
>not behave well with Postfix, though I can't recall the specifics of those
>claims.  I do know that Mark Martinec has been extremely diligent about
>ensuring that amavisd-new remains RFC-compliant, and that it behaves
>properly with many MTAs.  Mailscanner's author is a Sendmail user, while
>amavisd-new's author is a Postfix user, which may suggest where their
>respective strengths lie.  That said, I'm a Sendmail user, and I've had no
>problems with amavisd-new, which is probably why I'm still here :)
></quote>
>
><quote2>
>Mailscanner interfaces with postfix by grabbing files directly out of
>the postfix queue structure.  The postfix author states this is unsafe
>and may result in random loss of mail (truncated messages)
>with no warning and no indication in any log of a problem.  There have
>in fact been a few reports on the postfix-users list of this
>happening.
>The Mailscanner author insists his method is safe, as do many users of
>mailscanner+postfix (I'm not one of them). Apparently Mailscanner *is*
>safe when used with Sendmail or Exim.
>
>I would not imagine anyone knows what is safe with postfix better than
>the author of postfix.
></quote2>
>
>I can't confirm that all is true. And I've never seen any
>problems with MS and Postfix.
>
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>
>
>
>

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