Find Messaging Server Version
From MsgServerDocWiki
What command gives the version of Messaging Server that you are running?
There are lots of ways you can check the Messaging Server versions. One simple way is to run the command "imsimta version" from msg-svr-root/msg-instance directory (if it is Messaging Server 5.x versions) or msg-svr-root/sbin if it is Messaging Server 6 and greater (that is, from Java ES 6 2003Q4 and greater).

