On 04/10/16 23:12, Anton Bruckner wrote: > Hello, > i have following scenario: > > Many external mail domains resolve to one single ip address ex 1.2.3.4 after > dns lookup - is it now possible, to define a rule that says - > relay any mail with destination host "1.2.3.4" to relay host "5.6.7.8" ? > > I know that i can do it with a transport rule - but only with names, not ip > addresses. > > Any ideas ?
You can do it by recipient MX hostname, which should be close enough: smtpd_recipient_restrictions = ... check_recipient_mx_access hash:/etc/postfix/mx_transports /etc/postfix/mx_transports: mail.example.com FILTER :[myrelay.example.net] ... Peter
