Multiple Postfix smtp instances

[Glenn Steen]

On 13/04/06, Dhawal Doshy <dhawal at netmagicsolutions.com> wrote:
> Jan Brinkmann wrote:
> > Hi,
> >
> > is it possible to have multiple smtpd instances of postfix running on
> > different IPs where one instance is simple running to do SASL based
> > mail relaying (without mailscanner) and the other one can act as the
> > MX for virtual domains? On servers where I use amavis, it's possible
> > to specify multiple smtpd lines where one has the content_filter set
> > to an empty string. I thought it would also be possible to do this
> > with header_checks, but it doesnt work as expected:
> >
> > 1.2.3.4:smtp      inet  n       -       n       -       -    smtpd
> >   -o header_checks=
> > 1.2.3.5:smtp      inet  n       -       n       -     -    smtpd
> >
> > The second instance (the one listening on 1.2.3.5) would be the one
> > where the mails are set to a HOLD state to enable mailscanner. The
> > other one would be the one which is used to relay mails for sasl
> > authenticated users. If I try to do it this way, all mails get
> > filtered by mailscanner. If I go the other way, with header_checks
> > in main.cf set to an empty string and header_checks defined in the
> > master.cf no mails get scanned at all:
> >
> > 1.2.3.4:smtp      inet  n       -       n       -       -    smtpd
> >   -o header_checks=regexp:/etc/postfix/mailscanner_hold
> > 1.2.3.5:smtp      inet  n       -       n       -       -    smtpd
> >
> >
> > Any ideas if this can be done, and which way would be correct?
>
> See..
> http://www.postfix.org/BUILTIN_FILTER_README.html#remote_only
> http://www.seaglass.com/postfix/turning_off_body_checks.html
>
> You approach is right, just use the
> receive_override_options=no_header_body_checks option..
>
See, one learns something new every day:-). Thanks Dahwal.


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-- Glenn
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