I have had the beta version of the Mimecast Services for Outlook running for some time now and I have to say it is very useful, I find myself using it quite frequently. As we are not Journaling emails to Mimecast just now I am only using it for external emails, however I am working on a plan to push the final release to the users within the Firm in the coming weeks.
The connector itself is an MSI file so this is easily pushed out through GPO, however the connector requires Visual C++ Redistributable files which are installed by an exe so my answer to this was install both files at computer startup.
The actual Mimecast Services for Outlook I installed as a published software through GPO as mentioned above, the VCRedist_x86.exe I pushed out through a computer startup script as a batch file, the batch file is very straight forward:
if exist C:\Support\Flags\vcredist_x86.log goto installed
vcredist_x86.exe /q:a /c:"msiexec /i vcredist.msi /qb! /l*v C:\support\flags\vcredist_x86.log"
exit
:installed
exit
On our PC's we have a support\flags folder where all flag files/logs are put for software installations, so if we need to keep these scripts in place for any length of time they will check to see if a flag or log file exists and then skip the installation.
And it is that simple to put out the Mimecast Services for Outlook. To be honest I did not check to see if running the setup.exe (that combines the two packages) will work silently or not. But this method works ok for me.
I am just waiting for the global configuration tool so that when I do push this out to the users we have some way of creating their profiles within outlook automatically too.