Today I came across a problem where I wanted to deliver mails from the backup of Kaspersky Security for Exchange 22.214.171.124 to an Exchange Server 2010, but the messages could not be sent. Further analysis of the Kaspersky logs showed a problem with an unsupported Exchange Version.
I checked the Kaspersky Logs at C:\Program Files (x86)\Kaspersky Lab\Kaspersky Security for Microsoft Exchange Servers\logs\kselogCURRENTDATE.log and saw this line:
9684 Warning Notifications 'Testnachricht von Kaspersky Security 9.0 für Microsoft Exchange Server.' wurde nicht versendet. Ausnahme: Microsoft.Exchange.WebServices.Data.ServiceVersionException: Exchange Server doesn't support the requested version.
Requested Version unsupported? Exactly! The Exchange Server was still running with Service Pack 1. My bad. Now the customer is determining when a downtime for the Exchange Server due to the Update to Service Pack 3 can be planned.