I recently updated a server's Ubuntu version, and multi-domain sender-dependent transport for Postfix has stopped working. Postfix is now at 2.11.0, but I'm not actually sure what version it was at before.
This installation serves two domains, one of which is the one I'm using to send this message. The other is supposed to be switched to a different outgoing IP/host using sender_dependent_default_transport_maps. This has been working just fine for many months. Since the server upgrade, all messages sent by the other domain show as being sent by the IP for ericabrahamsen.net, and SPF checks are failing. Ie, the smtp_bind_address in master.cf below isn't taking effect. Incoming mail is accepted at the two different IP addresses as usual. I don't know if this is due to a change in postfix configuration, or something to do with networking on my server. I have also queried my hosting provider. Below is what I've got for my configuration. Can anyone tell me if any of this looks wrong? Thanks! Eric main.cf: myhostname = mail.ericabrahamsen.net mydomain = mail.ericabrahamsen.net sender_dependent_default_transport_maps = hash:/etc/postfix/sender_transports sender_transports: @ericabrahamsen.net ea-out: @paper-republic.org pr-out: master.cf: # only posting the misbehaving domain 184.106.81.119:smtp inet n - n - 1 postscreen -o smtpd_tls_key_file=/etc/ssl/key -o smtpd_tls_cert_file=/etc/ssl/pem -o syslog_name=paper-republic.org -o smtp_helo_name=mail.paper-republic.org -o smtp_bind_address=184.106.81.119 -o myhostname=mail.paper-republic.org -o smtpd_service_name=smtpd_184.106.81.119 -o tlsproxy_service_name=tlsproxy_184.106.81.119 tlsproxy_184.106.81.119 unix - - n - 0 tlsproxy -o syslog_name=paper-republic.org -o smtpd_tls_key_file=/etc/ssl/key -o smtpd_tls_cert_file=/etc/ssl/pem smtpd_184.106.81.119 pass - - n - - smtpd -o smtpd_tls_key_file=/etc/ssl/key -o smtpd_tls_cert_file=/etc/ssl/pem -o syslog_name=paper-republic.org 184.106.81.119:submission inet n - n - - smtpd -o smtpd_tls_key_file=/etc/ssl/key -o smtpd_tls_cert_file=/etc/ssl/pem -o myhostname=mail.paper-republic.org -o mydomain=mail.paper-republic.org -o syslog_name=paper-republic.org pr-out unix - - n - - smtp -o smtp_bind_address=184.106.81.119 -o myhostname=mail.paper-republic.org -o smtp_helo_name=mail.paper-republic.org -o syslog_name=paper-republic.org It's this last clause which doesn't seem to be working.
