On 13.03.2013 11:29, DTNX Postmaster wrote: > Masquerading is intended for outgoing only, AFAIK, see; > http://www.postfix.org/postconf.5.html#masquerade_domains > > Why not use 'transport_maps', if you are not delivering any mail > locally? > > example.com relay:[mailbox.example.com] > > You can relay the server name addresses in a similar fashion; > > server.example.com relay:[mailbox.example.com]
That does not really scale well as it is some 100+ servers with servers coming and going. > Or use 'recipient_canonical_maps' to rewrite; > > @server.example.com @example.com Same here. > Which will then be routed to 'mailbox.example.com' using the transport > maps. The latter means that the backend server does not need to know > about 'server.example.com'. > > When combined with address verification this also removes the need to > maintain a list of valid accounts on the relay server itself, since it > will check if an account exists before accepting mail for it. Due to the amount of mail accounts address verification isn't really an option. We have a list of mail accounts ready thus it should be checked locally on the relay before accepting the e-mails. -Gerald
