I receive a ‘550 relay not permitted’ error message; how do I enable SMTP Authentication? Print
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The same username and password used to retrieve your mail from the mailserver on which your domain is setup at Hetzner, will apply for outgoing email authentication. A typical error when not authenticating successfully with our mailserver is the ‘550 relay not permitted’ error message received by your email client. It indicates that you are not authenticating with the SMTP server and the SMTP server is therefore rejecting your request to send (relay) mail through it.

To enable SMTP authentication in your email client:

Using Outlook (XP 2003) -

  1. Click ‘‘Tools’ from the email client menu
  2. Select ‘Email accounts’
  3. From the pop-up, select ‘View or change existing account’
  4. Click ‘Next’ (provided the account does indeed exist on your local PC)
  5. Select applicable email account and click ‘Change’
  6. Click the ‘More Settings’ button
  7. Select the ‘Outgoing server’ tab
  8. Ensure that the first option, ‘My outgoing server requires authentication’ and the second option ‘Use same settings as my incoming mail server’ is ticked
  9. Select the ‘Advanced’ tab
  10. Set the Outgoing Server (SMTP) Port to 587
  11. The Incoming Server (POP) Port should be set to the default setting, 110
  12. Click ‘OK’ to save these settings
  13. Click ‘Next’ and ‘Finish’

Using Outlook Express (4 - 6) -

  1. Click ‘Tools’ from the email client menu
  2. Select ‘Accounts’
  3. From the pop-up, select the ‘Mail’ tab
  4. Click ‘Properties’.
  5. Select the ‘Servers’ tab
  6. Ensure that the checkbox for ‘My server requires authentication’ is ticked
  7. Click the ‘Settings’ button next to ‘My server requires authentication’
  8. Ensure that the first option, ‘Use same settings as outgoing server’, is selected
  9. Select the ‘Advanced’ tab
  10. Set the Outgoing Server (SMTP) Port to 587
  11. The Incoming Server (POP) Port should be set to the default setting, 110
  12. Click ‘OK’ to save these settings
  13. Click ‘OK’ and ‘Close’

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