i searched long time via google, but didn't found a answer for my problem.
After try around with many settings including Active Directory mapping via "ads.map" (See Knowledge Base Article from Kerio "Mapping different name from Active Directory"), finally i found a solution and would like to share the solution.
Our mail-address are different from the Active Directory UPN (Login Name) and if you create a local account on kerio connect with kerberos authentication, you have to use the UPN as kerio username. If you don't do so, you are not able to login.
But the problem is, if you create the kerio account with the UPN, kerio creates automatically a default-mail-address with the UPN.
You're able to change the sender-mail-address in the kerio webmail but this doesn't affect mail-filter or calender invitations.
Full Name: John Doe
1. Create local kerio account with mail-address (without domain) as username (john.doe) and with Kerberos authentication method.
Kerio Connect autmatically creates the default-mail-address john.doe<_at_>example.com
2. Stop the Kerio Connect Server
3. Edit "user.cfg" in the install-path of Kerio Connect Server
(Under Mac OS X: /usr/local/kerio/mailserver/user.cfg)
4. Find your user and add the Active Directory samAccountName to follow variable
Original: <variable name="KrbUserPrincipalName"></variable>
Changed: <variable name="KrbUserPrincipalName">jodo</variable>
5. Save the "user.cfg" and start Kerio Connect Server
6. Now you should be able to login with "john.doe<_at_>example.com" in Kerio Connect
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