Running GW2014.0.2 on SuSE server with SLES11sp3

Inbound mail often has embedded .gif's and content that the users want to see. When this mail arrives the user receives a "warning" in the client that "Groupwise has prevented images on this page from displaying. Click here to display"

Now my users no longer want to "click here", they want the mail displayed automatically without the warning message or having to click ....
I would like to make this the default from the domain/post office level downwards.