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

  • From: "John Tolmachoff \(Lists\)" <johnlist@xxxxxxxxxxxxxxxxxxx>
  • To: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx>
  • Date: Fri, 9 May 2003 13:27:30 -0700

> 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,
> policy entry) but for some reason one of the domains is generating the
> 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
> our Exchange server. When they were configured to get email via the
> connection they were getting an error that the exchange server was not

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

John Tolmachoff MCSE CSSA
eServices For You

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