WingLoon: Setup Smart Relay Host Port in Sendmail

Does your ISP block outgoing SMTP port 25? Your mail hosting provider is giving you an alternative to relay email using a different port 2525 at their mail server and their mail server supports SMTP authentication. You may follow the simple Sendmail setup below: -

1. Find “DS” in /etc/mail/sendmail.cf and add your mail server name as below: -

DSmail.example.com

2. Find “Mrelay” in /etc/mail/sendmail.cf and add “2525″ to “A=TCP $h” as below: -

A=TCP $h 2525

3. Add the following line below in /etc/mail/access file in one line: -

AuthInfo:mail.example.com "U:user@example.com" "I:user@example.com" "P:password" "R:example.com" "M:LOGIN PLAIN"

4. Then, restart your Sendmail service as below: -

service sendmail restart

4. Finally, you can monitor your maillog using the command below: -

tail -f /var/log/maillog

If you found these helpful, please contribute to help: