What is the right format to migrate from Kerio mail server without reset all users password?

Occasional Visitor

HI to all,

I have to migrate about 300 user mailbox from Kerio mail server to Exchange Online.

I don't know users' password so I can't use the classic format for the CSV.


I've tried with Dovecot format without success.

I've tried with Mirapoint format but there is a problem. I used the below format:




but exchange online start to migrate admin mailbox instead the user mailbox. 


Any ideas?

I would like to avoid to change all users' password :)


thanks a lot


Emanuele C


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