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markjrees -> #5.5.0 smtp;550 relay not permitted - when sending to a specific domain.. (16.Jan.2008 4:38:58 AM)
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For some reason when we try to send an e-mail to a specific domain we receive a 550 - Relay Not Permitted error in return.
It's just to this one domain. Is the problem likely to be on our exchange (2003) server or at the other end?
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