Check your SMTP server (updated)

Ever had trouble sending out mail being recognized as spam? Here are some simple tests you should perform in order to find out whats wrong:

- Visit and enter the IP address of the outgoing SMTP server
- Send an email to test @ and wait approx. 10-15 mins for a non-delivery-notice. In it you'll find a link to your results ! Besides blacklists it checks for DKIM, SPF and such
- Please also send a testmail to: check-auth @ and wait for the detailed answer after that
- You may also check for TLS working correctly here:
- Finally check your protocols here:

Configuring your own postfix for the incoming side involves this: