Bypassing Mailscanner for Outgoing mail?

[Glenn Steen]

On 26/03/07, Paul Hutchings <paul.hutchings at mira.co.uk> wrote:
> Mailscanner/Linux newbie here (I know enough to get by).
>
> I'm building a new Suse/Postfix box as an SMTP gateway and want to
> achieve the following:
>
> Scan inbound mail for spam and viruses.
> Scan outbound mail for viruses only, and add a disclaimer.
>
> AIUI mailscanner looks at ALL mail that Postfix handles, so I'm trying
> to work out how I would achieve the above.
>
> >From what I've read, I believe that what I can do is use a single
> Postfix instance and use rulsets to do the following:
>
> 1) Set "Virus Scanning" to scan all mail for viruses (default).
> 2) Set "Spam Checks" to exclude outbound mail from spam scanning by IP
> address (it threw me that a "From:" rule can also refer to an
> IP/Subnet).
> 3) Set "Sign Clean Messages" to only include mail from our internal
> servers IP.
>
> I assume by default that if an outbound message passes the virus check,
> but does not get scanned for spam that it meets the criteria of being an
> "uninfected message" for "Sign Clean Messages" to fire?
>
> Have to say I felt rather daunted by MailScanner.config but it actually
> makes a lot more sense to me that trying to use the Webmin module.
>
> Anyway, appreciate any comments as to if I'm going about this the right
> way or not?

You're coming along nicely:-).
That is prtty much how I do it... Can't really remember if there was
any more things to whitelist (than Scan...), I'll check tomorrow and
let you know.

Cheers
-- 
-- Glenn
email: glenn < dot > steen < at > gmail < dot > com
work: glenn < dot > steen < at > ap1 < dot > se