I am really in the dark on this one, due mainly to the fact that this server was a "fit and forget" installation once upon a time. We are GW8 on NetWare 6.5 (still!) and only recently did we move from the mobility pack to GMS. At that time, I patched SLES 11 SP1 to SP3, and upgraded to GMS 2.0.1. It did run fine for a week or two, but now, every 48 hours or less, I have to reboot the SLES server. At some point, with no pattern, it stops working. The devices stop receiving mails, and when checking new mails it just comes back as if you haven't had any (no errors). The web portal for GMS shows the services as running, as if all is well.
So I keep rebooting the **** thing every day or two, but where do I start with looking into the reasons?
I've upgraded our GW8 to 8.0.3 HP4 this weekend, to see if it helped - it didn't.

TIA for any suggestions!