Situation You want to configure Outbound Relay for domains utilizing Distribution Groups sending to external domain recipients but you receive a Relay Access Denied error. Solution At this time, this ...
Customers who have configured a masquerade domain on a virtual SMTP server may experience problems sending outbound emails through the Proofpoint Essentials platform. Proofpoint Essentials does not su...
Proofpoint Essentials does filter outbound email for SPAM. If a message is not delivered it will be recorded in the Email Logs and can be released to the intended recipient. Please note that similar m...
SPF Check on Essentials for inbound mail As part of the Proofpoint Essentials spam scanning, the senders SPF record can contribute to the overall spam score of the message. Proofpoint Essentials does ...
Bounces and Deferrals Troubleshooting: Delivered: Messages that are sent through Proofpoint Essentials platform and are delivered. Quarantined: Message that are quarantined by one of the filters on th...
Why do I keep getting a 554 5.7.1: Relay access denied? Proofpoint Essentials is a closed relay system. This means that all mail going through the Essentials platform must have a user associated with ...
Common Error Codes Delivery summary: Any time you see, “This message was rejected by its destination for reasons outside the control of Proofpoint Essentials, and got returned to the sender”, this lit...
The Proofpoint Essentials MTA's will give a 550 user invalid response to inbound email sent to a recipient address that has been marked as Invalid by the SMTP Discovery service. 550 User email address...
Situation You want to configure Microsoft Office 365 to use with Proofpoint Essentials as your email gateway. Summary See below for information on: Pre-requisite information to begin What to do with P...
Lockdown your firewall or server to accept incoming messages only from the ProofPoint Service - We encourage, to lockdown your firewall and/or server to accept incoming messages only from the ProofPoi...