Issue
User tries to save a site while configuring Exchange Pro, and receives an error saving the forest.
Solution
Verify the relationship between the Forest and SMTP records are correct.
To verify open SQL Server Management Studio and run the following query (replace ExchangePro with the name of your database):
use ExchangePro
GO
SELECT [ForestID],[SMTPServerID],[ForestName],[ForestStatusID],[HomeForest]
FROM CMTEUP_Forest
SELECT * FROM CMTEUP_SMTPServer
Make sure the SMTPServerID matches in both result sets.
If not, Edit the Top 100 rows of the CMTEUP_Forest table and manually change it to the right value.