Mimecast Synchronisation Engine – MailboxUnreacheable CONFIGURATION INVALID

Exchange validation
  [-] exchange mailbox validation failed, code: MailboxUnreacheable
CONFIGURATION INVALID
 
Open up
 
C:\ProgramData\Mimecast Synchronisation Engine\State
 
Create global.ini file
 
On the first line enter
 
Mse.Core.Bridge.SecurityProtocol=4032
 
Save , restart the Mimecast Synchronisation Service , and try again
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Tags: global.ini, Mimecast Synchronisation Engine, Mse.Core.Bridge.SecurityProtocol=4032, TLS

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