Mail Transmission Agent fails with error "configuration file missing or corrupt" and no data is transferred from source to target
Additionally, on the host server the event viewer indicates the same error, and it will direct you to the path of the corrupt or missing file. (See screenshot attached)
The Mail Transmission Agent config.ini file has become corrupt by backup software, or Anti Virus software scanning the agents share.
Resolution dependant on version
Version 8.6.1 and below
-Stop the Mail Transmission Agent (if running)
-Locate the Mail Transmission Agent config.ini on the source server
-Rename the config.ini to config.old or delete it entirely,
-In the Migration Manager GUI expand the Source Organization until the source server appears,
-Right click the Source server name and Click Properties,
-Click OK to send a new config.ini to this server
-Start the Mail Transmission Agent
Version 8.7 and above
-Stop the Mail Transmission Agent (if running)
-Locate the Mail Transmission Agent config.ini on the source server
-Rename the config.ini to config.old or delete it entirely,
-go to Agent Management
-Highlight the source server name
-Click the Properties option on the right pane
-Expand the agents list until you see Mail Transmission Agent, and Click OK
-Start the Mail Transmission Agent
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