I would like to run postfix on port 587, accept mail and than pass it onto another MTA that is running on port 25.
Initially I thought I could achieve this by turning of smtp and turning on submission on master.conf and than add a default_transport to 127.0.0.1, but this resulted in "mail loops back to myself" error messages. I eventually fixed it by adding a transport rule "* relay:127.0.0.1:10025" and having the other MTA listen on 10025, but wondering if this is the best way. I would rather touch the other MTA as little as possible and current setup requires me to do some configuration there. Any suggestions would be appreciated. -- Mehmet
