I wrote:
> Hello, I seek advice. For mail received on port 25 for my domain,
> the usual local transport should be used (as accomplished with
> mydestination=mydomain), but for mail submitted by authorized users
> on port 587, I want all such mail (even for recipients@mydomain)
> to get sent via SMTP to a separate smarthost for additional
> filtering.
Maybe you could use this:
/etc/postfix/master.cf
submission .. .. .. .. .. .. smtpd
-o ...usual submission options...
-o content_filter=smtp:filterhost.example
-o receive_override_options=no_header_body_checks
The no_header_body_checks ensures that no FILTER actions in
header/body_checks can override smtp:filterhost.example.
You may want to do the same thing with the sntps service.
To add to the above, you can use the same receive_override_options
with the pickup daemon.
Don't forget 'postfix reload' after editing master.cf.
See http://www.postfix.org.postconf.5.html#receive_override_options
for other options that may be of interest.
For example:
-o receive_override_options=no_header_body_checks,no_address_mappings
Or, to allow whitespace for readability:
-o { receive_override_options =
no_header_body_checks, no_address_mappings }
Wietse
