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Testing

SMTP AUTH configuration is complete. Now it is time to start and test the setup. You can run the following command to start the SASL daemon:

 sudo /etc/init.d/saslauthd start 

To see if SMTP-AUTH and TLS work properly, run the following command:

 telnet mail.example.com 25 

After you have established the connection to the postfix mail server, type:

ehlo mail.example.com

If you see the following lines among others, then everything is working perfectly. Type quit to exit.

 250-STARTTLS
 250-AUTH LOGIN PLAIN
 250-AUTH=LOGIN PLAIN
 250 8BITMIME
 

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