Knowledgebase: Outbound Mail Flow
Issues with Email auto-forwarding
Posted by Adam B, Last modified by David Szoke on 12 January 2018 09:10 PM

Proofpoint Essentials does not support the Outbound relaying of any email traffic for domains which do not belong to our customers and which have not been preregistered for a customer.

 

As such Auto-forwarding messages should be relayed using DNS only.

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