Hi We use mailhog in development / testing and hook it up to postfix. It so that if you mail to an email address ending in .external, it will be relayed to a real server. And, if doesn't we relay it to mailhog.
Postfix configuration /etc/postfix/main.cf: myhostname = myserver.mydomain.tld relayhost = real-smtp-relay.mydomain.tld smtp_generic_maps = pcre:/etc/postfix/smtp_generic_maps.pcre transport_maps = hash:/etc/postfix/transport The smtp maps make sure that the .external part is stripped off. /(.*)\.external$/ $1 The transport maps decide that .external addresses will be relayed to the real SMTP server and the rest will be relayed to mailhog. .external : * smtp:127.0.0.1:1025 I would like to migrate this setup to OpenSMTPd but I'm not sure if it can be done. I think the important part is that the PCRE trick is missing. Or should I use a different approach? Kind regards, Tom Van Looy
