We’ve been experiencing this issue since upgrading to GroupWise 7; we’re now operating in 7.02. One of our end users has a default compose and reply font that was changed to TNR blue, even though his default font is set to Arial black.
The solution to this issue is:
1. Under Tools > Options > Environment > Views, find the Views section in the upper right corner.
2. Select either Mail* or Mail (simple).
3. In the bottom section, select Plain Text for both the Default Compose View and Font, and the Default Read View and Font.
You can select whichever font you want.