View Full Version : [ubuntu] howto setup postfix to use external smtp server

May 2nd, 2009, 09:30 PM
I have Charter for my ISP, so I would like to use their smtp server to send my e-mails from postfix on my ubuntu 8.04 server.

I know the smtp address for charter (smtp.charter.net) but I don't know how to stick that into postfix.

May 2nd, 2009, 11:12 PM
Add the following to /etc/postfix/main.cf and reload postfix

relayhost = [smtp.charter.net]

Reference - http://www.postfix.org/postconf.5.html#relayhost

May 3rd, 2009, 07:39 AM
you may look at http://www.howtoforge.com/postfix_relaying_through_another_mailserver for step-by-step guide.

May 3rd, 2009, 08:38 AM
It's actually for GMail, but you can probably get some idea of what you need from my config - http://files.tonyyarusso.com/postfix_config_gmail.tar.gz