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Outlook - DLP Plugin prevents email from being sent to Outbox in when in Offline Mode

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Article ID: 224516

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Updated On:

Products

Data Loss Prevention Data Loss Prevention Endpoint Prevent

Issue/Introduction

  • You are using Mac OS with 15.7 MP2 or greater with the DLP Outlook Add-in for email detection
  • You notice when Outlook is switched to offline mode, clicking send does not transfer the email message to the outbox ready to send when you are back online

Cause

This is a known limitation of the on-send add-in type for Outlook.

Environment

Release : 15.7 MP2+ , Mac OS 10.15.x, Mac OS 11.x

Component : Outlook 16.30+

Resolution

This is a known limitation (external link) of the Microsoft OnSend add-in type for Outlook on Mac OS, and is not specific to the Symantec DLP add-in

Currently there is no workaround to this other than to disable Offline Mode as an option for Outlook Users on Mac OS.