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550 not local host, not a gateway

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demea26

IS-IT--Management
Mar 31, 2004
12
US
I'm having the problem, but only when the Cisco IOS firewall v.12.3(2) is up, which isnt good for obvious reasons. When disabled, everything is OK.
Error message,
550 not local host accupac.com, not a gateway.

Its really driving me nuts because people are saying that the outgoing server requires authentication in Outlook properties, but is already being authenticated!
Do I need to add an access list?
I dont know, any help would be appreciated.
 
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