Hosted Exchange - “550 5.7.60 smtp, client does not have permissions to send as this sender”

Incident Report for Zix | AppRiver

Resolved

This incident has been resolved.
Posted Mar 18, 2025 - 07:08 CDT

Monitoring

The final fixes were deployed Friday 2/28/2025. We are continuing to the monitor the system. Please contact support if you are running into any further issues.
Posted Mar 05, 2025 - 07:28 CST

Update

We are continuing to work on a fix for this issue.
Posted Feb 26, 2025 - 12:59 CST

Update

We are receiving some reports of the issue occurring at this time. Our engineering team is investigating and making further adjustments.
Posted Feb 25, 2025 - 08:51 CST

Update

The process is complete, the fix should be applied to all impacted mailboxes. We are currently monitoring. Please contact support if you are running into any further issues.
Posted Feb 24, 2025 - 07:18 CST

Update

Resolution is being applied to affected mailboxes. It may take a bit of time for the process to complete. Will update once the process is completed.
Posted Feb 21, 2025 - 13:36 CST

Update

We are continuing to work on a fix for this issue.
Posted Feb 20, 2025 - 16:20 CST

Identified

The issue has been identified and a fix is being implemented.
Posted Feb 20, 2025 - 10:49 CST

Update

Our Engineering team is continuing to investigate this issue
Posted Feb 19, 2025 - 15:35 CST

Investigating

We are aware of an issue with IMAP and POP clients receiving “550 5.7.60 smtp, client does not have permissions to send as this sender” error when sending from outlook.

We are investigating this for resolution.

As a work around users can use OWA - http://exg7.exghost.com to send and receive emails
Posted Feb 19, 2025 - 09:56 CST
This incident affected: Secure Hosted Exchange (Exchange 2013/2016+ (EXG7)).