Get -18597 error when sending mail

[Simon Cavill]

Hello all,
For some reason, out of the blue I can no longer send any mail from
Entourage 2004 SP2 via our SBS 2003 Server. Every time I try I get...

"Entourage is unable to access the mail account you are using with the mail
server configured for that account." -18597 error.

Nothing has changed anywhere to my knowledge - Can anyone help please?

Simon Cavill

 

[Simon Cavill]

Just an update - It appears something on the server side has failed here.
We are seeing 403 errors when attempting to send or delete mail using the
web client. Nothing has changed on the server side that we know of - Please
help!!!

 

[Mickey Stevens]

See this article on the Microsoft Knowledge Base for a resolution that might
help:
<http://support.microsoft.com/?kbid=884987>