When your linux box needs to send email (e.g., mail sent by a webpage, cron job output, etc), postfix can normally send the email directly to the recipient. However, if your ISP blocks port 25 outbound, or you want to keep a nice log of all outgoing messages, or want replies to arrive in your […]
Setting up gmail as a relay host in postfix (without creating certificates)
Posted by Robert on July 17, 2011
https://www.rs20.net/w/2011/07/gmail-as-relay-host-in-postfix/