Alex via Postfix-users:
> Hi,
> I'm using multi-instance postfix-3.7.2 on fedora37 and would like to be
> able to control which header and body checks apply to which domain in a
> specific instance. I'm looking for advice on the best way to do this.
>
> I have about ten domains right now, and would probably need a number of
> policies that control filtering for these domains. I was thinking I could
> create a new instance for each domain, but I only have a limited number of
> IP addresses. Is it possible to do this using content filters with a
> multi-instance postfix configuration? Do you have any examples of how this
> might work?
>
> I also recall reading about using a milter for this, but would that require
> me to develop my own application for this? Or is there one already created
> and supported that might help here?
>
> I've used if/endif conditionals in check_recipient_access in the past, but
> this doesn't work for header/body checks?
>
> I'm not sure where to start, so I'm also not sure what other config details
> I should provide to help make this determination.
I'd say, start with one instance per domain. The 'cost' of doing so
is really small.
Wietse
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