RE: 550 5.7.1 Unable to relay for ....

> I am experiencing an odd error with SBS 2000 and email. I have
approximately six
> different domains that I manage email for and all of them are working fine
with the
> exception of one. All are configured identically (DNS entry, MX entry,
recipient
> policy entry) but for some reason one of the domains is generating the
following
> error every time the user tries to send or reply to an email. They can
receive email
> without problems, they just can not send or reply. There is only one user
in this
> email domain and they are able to ping the DNS entry for their domain.
> 
> The user is on an XP system and has configured to use pop3 when connecting
to
> our Exchange server. When they were configured to get email via the
Exchange
> connection they were getting an error that the exchange server was not
available.

Since it is only one user having this problem, sounds like he/she needs to
check "Outgoing (SMTP) server requires authentication." on the e-mail client
software.

John Tolmachoff MCSE CSSA
Engineer/Consultant
eServices For You
www.eservicesforyou.com




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