<time> (ESRI) Server started on server1
<time> (ESRI) Wrong hostid on SERVER line for license file:
<time> (ESRI) 	license.dat
<time> (ESRI) SERVER line says 904a6b1c, hostid is 605c4c2a
<time> (ESRI) Invalid hostid on SERVER line
The hostid is incorrect in your license file. Your file contains hostid 904a6b1c, the actual hostid of your machine is 605c4c2a.
You are either running the license manager on the wrong machine or you are using the wrong license file for that machine.
If the hostid returned does not match the hostid of your machine you need to get a new license file from ESRI Customer Service that contains the correct hostid.
Verify that the license manager has been started on the machine listed in your license file.