On Thu, Jul 20, 2017 at 04:30:38PM +0000, Pedro David Marco wrote: > > Wietse > >http://www.postfix.org/postconf.5.html#smtp_fallback_relay > > > is there any chance to suggest a future feature to have this done > via the transport file?
The transport_maps lookup is not necessarily a "file", FWIW. It could be any supported maptype. Anyway, the requested functionality already exists through the creative use of MX records. The lack of "[]" brackets around a hostname tells Postfix to look up MX records for the name. For example: [ transport mapping ] example.org smtp:relays.example.net [ DNS records ] relays.example.net. MX 1 1.relays.example.net. relays.example.net. MX 2 2.relays.example.net. 1.relays.example.net. A 192.0.2.25 2.relays.example.net. A 192.0.2.26 The DNS names used do not have to be globally available; they could be in a private zone only queried by the Postfix server. -- http://rob0.nodns4.us/ Offlist GMX mail is seen only if "/dev/rob0" is in the Subject:
