Symptom

When attempting to send email, you get an error message similiar to;

503 this mail server requires authentication

Cause

SMTP Authentication (SMTP-AUTH) is enabled on the SMTP server and you are not providing a valid username and password.

Resolution

1. Enable SMTP authentication in the SMTP settings of your email application.
2. Enter a valid username and password.

Sponsors

Related posts:

• 0×800CCC7C – Your outgoing server requires an SSL-secured connection.
• Secure Password Authentication – Error Message 0×800CCC18
• How-to fix X-APOP authentication in Apple Mail
• How-to enable SMTP Authentication
• How do I fix Sender address is not valid for your login error?

Tags: e-mail, Email, troubleshoot, troubleshooting

This entry was posted on Saturday, May 9th, 2009 at 5:26 pm and is filed under Troubleshooting Email. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.