Outlook could not logon to the outgoing mail server - Exchange server

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Hello everybody,

I am having a rather annoying problem with Outlook 2003 connecting to
Exchange running as a part of the SBS 2003.
When I click the "Test Settings" button in the Outlook account
properties I get:
"Send test e-mail message: Outlook could not logon to the outgoing
mail
server (SMTP). The problem could be the server name, your server may
require
authentication, or your server may not support SSL. Verify
authentication and
SSL options under More Settings."

The interesting thing is that i was able to set it to work via the
Outlook Express on the SBS server box but it does not work from
outside of the LAN.
AS far as the firewall it does forward ports 25 and 110 to the
Exchange server.

Also, all of the tasks get Completed mark when testing the Account
Settings accept Log onto incoming mail server and Send test e-mail
message - this one fails.

Please any suggestions would be appreciated

Thank you

Igor

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