Linux - Unable to send email using Postfix
Below outlines the issue and resoultion when trying to send email using Postfix.
When trying to send an email on my linux platform I get the following error message in my mail.log ??
This is down google thinking that you could poss be a spammer.
1. Add the following line to your /etc/postfix/main.cf file,
relayhost = <ISP Relay Server Name>
Change the server name to your ISP relays server name. For a list click here
2. Restart postfix - '/etc/init.d/postfix restart'