***Disclaimer : it is also known as Invalid RFC 822 Message

Causes

• The migration wont be halted but might exist in the logs if some messages fail.
• Messages usually fail because they don’t meet the requirements for G Suite.

Fixes

Step 1: Access GSMME Show Report Function

Access the GSMME Show Report function, which provides a full report of messages that failed to migrate.

Step 2: Refer GSMME Admin Guide

For details on migration reports, you can refer the GSMME Admin Guide.