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troubleshooting Question

Cannot get outlook express to send eamil from remote site through exchange server

Avatar of DMooring
DMooringFlag for United States of America asked on
ExchangeEmail Protocols
6 Comments1 Solution396 ViewsLast Modified:
We have an exchange 2003 server at a clients location behind a firewall.
SMTP, POP3, and IMAP ports are forward through firewall.
When the user from home tries to send an email through the server to an outside address we get

The message could nt be sent because one of the recipients was rejected by the server. The rejected e-mail addess was "outside address". Subjet 'test' Account: 'gary'. Server: "exhchange FQDN", Protocol: SMTP< Server response: "550 5.7.1 Unable to relay for "outside address", Port:25, Secure(SLL): No, Server Error; 550, Error number: 0x800CC79

If I allow relaying through the server for any computer this work, but I cannot have an open relay. I have "Allow all computers which successfully authenticate to relay" checked.

Anonymous, Basic and Integrated Auth. is checked for Authentication.

Need help.

Thanks
ASKER CERTIFIED SOLUTION
Avatar of Dave Howe
Dave HoweFlag of United Kingdom of Great Britain and Northern Ireland imageSoftware and Hardware Engineer

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Commented:
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