Knowledgebase : ProofPoint Essentials (PPE) > PP Documentation
Adminsitrator Guide [] End User Guide [
Features and Benefits Guide []
End User Guide []
Getting Started Guide - US1 []
Getting Started Guide - US2 []
Getting Started Guide - EU1 []
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 literally means that this is outside our control, and ...
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 the platform, whether that be End-User, alias, or Fun...
Please review the provided PDF for configuring the updated Proofpoint Essentials Archiving product. This document covers both local Exchange with SMTP Journaling and IMAP, and Office 365 with SMTP Journaling. The following links will go over each config...
ERROR: This domain name does not match domain registered in the license key file (, allowed domains:,localhost, please change the product path to match the domain under Admin CP > Settings > General Settings
This product will not work properly unless untill that value is changed.

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