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Need help setting up email forwarding from spam host to Exchange behind a Sonicwall

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Last Modified: 2012-05-07
I have an offsite spam filtering solution that all of our mail is routed to first and then forwards mail to our Exchange Server that sites behind a Sonicwall. Incoming mail is rejected with a "recv: 550 5.7.1 Unable to relay for . . ." error.
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all IP if your spam server to relay in send connector (Exchange 2007), smtp settings in exhcnage 2003
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Commented:
Thanks alanhardisty - that was it.
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