From							 To		Result			Reason
-----------------------------------------------------------------------------------------------------------------------------------------------------

Internal MySQL

hMailServer 3.3   			 Latest 	Error 			4.1.1 does not include required version of MySQL.
hMailServer 3.4.1 - Uninstall first	 Latest		Error			MySQL will no longer be installed
hMailServer 4.1.1 			 Latest 	Error 			4.1.1 does not include required version of MySQL.
hMailServer 4.1.1 - Uninstall first	 Latest		Error			MySQL will no longer be installed
hMailServer 4.4.3 			 Latest 	Success			4.4.3 includes required version of MySQL.
hMailServer 4.4.3 - Uninstall first	 Latest		Error			MySQL will no longer be installed
hMailServer 5.0	- via hMailServer 4.4.3	 Latest		Success			Supported upgrade path.
   
External MySQL

hMailServer 3.4.1 (External MySQL) 	 		 Latest		Success			Supported upgrade path
hMailServer 3.4.1 (External MySQL) - Uninstall first	 Latest		Success			Supported upgrade path

MSSQL

hMailServer 3.3   (MSSQL)  	 	 		 Latest		Success			Supported upgrade path
hMailServer 3.3   (MSSQL) - Uninstall first	 	 Latest		Success			Supported upgrade path
hMailServer 4.1.1 (MSSQL)			 	 Latest 	Success			Supported upgrade path.
hMailServer 4.1.1 (MSSQL) - Uninstall first	 	 Latest 	Success			Supported upgrade path.
hMailServer 5.0 (MSSQL) 			 	 Latest 	Success			Supported upgrade path.
hMailServer 5.1 (MSSQL) 			 	 Latest 	Success			Supported upgrade path.

SQL CE

hMailServer 5.0 (MSSQL) 			 	 Latest 	Success			Supported upgrade path.
hMailServer 5.1 (MSSQL) 			 	 Latest 	Success			Supported upgrade path.

