Newbie Q: Is ispCP Omega the right tool for me?

[pete]

Now that all has been up for a while, I have a new problem:

Every now and again, I get errors in outlook when trying to access my pop3 mailbox.

I have no idea where to look for what is going on, but I'm a bit worried that it might be caused by an external attack. perhaps the system isn't secure enough. But surely, there should be some logs that would give me a clue.

Rebooting the virtual server normally resolves the issue.

Where should I go and look first?