Maxwell
try testing the authentification with a telnet session
from your windows box, if that works you can pin point the issue to your mail client

if you dont know how to test it via telnet
use this nice tut :
http://qmail.jms1.net/test-auth.shtml

Cheers
-P
Maxwell Smart wrote:
I can connect from the same network using a Linux box. I can also connect to the server from the windows box using webmail, which means the DNS is working correctly.

Andreas Galatis wrote:
Hi Maxwell,

following your description this is not a authentification problem but rather a DNS or configuration issue.
Did you set the correct servername for outgoing mails in Thunderbird?
Is the protocol (smtp, submission) open on your (outgoing) firewall?
"Cannot connect to server" is far before authentification.
Try telnetting from those windows clients.

Andreas
Am Wednesday 19 August 2009 08:04:37 schrieb Maxwell Smart:
I am having authentication problems that I cannot seem to figure out.
It always seems to happen with Thunderbird on Windows systems.   I
cannot get the outgoing SMTP server to authenticate. It always comes up with an error, cannot connect to server. I am sure it's a problem with
Thunderbird, but cannot seem to solve it.  Anyone else have trouble
sending out using Thunderbird?

The mail server is QMT and authenticates fine from a Linux workstation
at the same location as the Windows box.

CJ

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