Troubleshooting Outgoing Mail / SMTP AUTH

<Also see: How Outgoing mail and SMTP Authentication works>

In certain mail clients the SMTP AUTH requires that you check your POP account *before* you try to send mail. If you are having problems with SMTP AUTH, try completely closing down your e-mail client and restarting it.  Once you have restarted it, check your mail FIRST, and THEN try to send a message.

Here's a link to a related .doc from the Ipswitch/IMail Knowledge base. It discusses Netscape, but the idea is the same for Outlook and other e-mail clients as well.
http://support.ipswitch.com/kb/IM-990204-ES02.htm

A few other tips:

In Microsoft Outlook, make sure the option "My server requires authentication" is checked.  Click the SETTINGS button next to this check box, and make sure "Use same settings as my incoming mail server" is also selected.

In Netscape, go to PREFERENCES -> IDENTITY.  Make sure that the fields 'E-mail address' and 'Reply To address' both contain user@yourdomain.com.  Then go to MAIL SERVERS and make sure that in the field 'Outgoing mail server username' contains user%yourdomain.com.

The 'Outgoing mail server username' field needs to match the same username as the 'E-mail address' and 'Reply To' fields with the one notable exception of using the % sign instead of the @ sign between your username and domain.

Since SMTP AUTH is a new security feature, we will be posting more suggestions as work with it more.  Direct any comments regarding SMTP AUTH to: support@acmeinternet.com and check back here regularly.

Finally, if after much experimenting you find you are still having difficulty getting SMTP AUTH to work with your e-mail client, don't despair.   You still have the very viable and equally as functional option of pointing your outgoing SMTP settings to your dialup ISP's mail server to relay your outgoing mail.