550 5.7.1 unable to relay ERROR

[Guest]

I´m using outlook 2003 client in an exchange 2003. My outlook client is
configured to use IMAP. But, when send external mails the folowin error
appears: "error 550.5.7.1 unable to relay to ..... servidor smtp:.... error
0x800cc79".
How can i resolve it??
Thanks

 

[Guest]

The following article describes the concept of "relaying", why your ISP is
blocking your messages, and what you can do about it:

http://office.microsoft.com/assistance/preview.aspx?AssetID=HA011128331033

--
Jocelyn Fiorello
MVP - Outlook

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