On 2010-09-28 6:04 AM, Neil wrote: > I want to have postfix listen on an additional port (say 785) for SMTP > submission by clients.
You mean in *addition* to the submission port (587)? Or was that a typo and you really want to listen on port 587? > At first I thought all I had to do was add another line in master.cf > <http://master.cf> that looked the same as the submission line, but > change the port somewhere. Maybe it wasn't a typo... yes, you can simply clone the submission line in master.cf, but change the service name to the port# (ie, 785) like so: 785 inet n - n - - smtpd -o smtpd_tls_security_level=encrypt -o smtpd_tls_auth_only=yes -o smtpd_client_restrictions=permit_sasl_authenticated,reject But unless you have a really good reason ('security through obscurity is NOT a good reason), I recommend simply uncommenting the submission port and use it. > But then I read in the docs for master.cf <http://master.cf> it seemed > to me that a service could only be listed once in master.cf This only applies to the service+port#. Services listed by name by definition include the port#. So, you can't have two different smtpd listeners on the same host:port, but you can have multiple listeners on *different* ports. -- Best regards, Charles
