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Mail Contact blocked

I have an exchange server mail contact helpdesk@domain.com that forwards mail to helpdesk@domain.zendesk.com. Since adding the PMG this contact has stopped working I get Remote Server returned '<10.102.88.6 #5.7.1 smtp; 550 5.7.1 Unable to relay>' I have tried whitelisting, entering the...
- Andrew Parsons
- Thread
- Aug 21, 2018
- Replies: 0
- Forum: Mail Gateway: Installation and configuration

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