Thunderbird mail client, outgoing mail not working eventhough disabled firewall

From: GS (globalswamy_at_hotmail.com)
Date: 10/05/05 

Date: 5 Oct 2005 04:22:07 -0700

Thunderbird client giving error on Linux machine, same setup with
Outlook on Windows no problem at all?. I am getting this message on
Linux mesage,
the outgoing mail not going, but incoming no problem at all, also I
disabled firewall (even firewall enabled, I selected SMTP option), any
idea?.. Thanks.

Alert

The PASS command did not succeed. mail server yourdomain.com responded:
Username/Password Mismatch perhaps id@yourdomain.com ?