I'm not sure what's going on but I have a user on the same lan as the rest of his users and he is the only one with problems. Evetytime he goes to the cpanel server to check his mail via pop (the server is across the internet) either via outlook or express the messages end up timing out. Everyone else accessing the same domain has no problems from the same side of the network. Using outlook or express. I have tried running the fix DB/MBOX script in WHM and it usually mentions his mailbox. I have also tried deleting and re-adding his address and although it seems to fix the problem for a time the problem always seems to re-appear with in 24 hours.