<hopefully this message was send only once (gmail problems)>

Hello,

I'm from a small it-company in the netherlands. We have a ubuntu (5.10) server running courier-pop 0.47-3ubuntu7 with postfix 2.2.4-1ubuntu2 and configured with ISP-config. It's being used as the recieving-mail server for our customers (pop-only, no imap and no smtp).

The person who installed and configured this server left the company and now the administration of the server lies with me. I know my way around (debian) linux but have very little experience with email servers in general.

One of our clients has a strange problem. He collects his email with outlook and for a few weeks he did get any new email. Today for the first time he recieved new email that was dated today (2006-02-2006). I checked the /var/mail/client mbox file and found that there was email from the previous weeks in there. When I run mutt -f /var/mail/client or mail /var/mail/client I can see al the emails that he didn't recieve, but when I use a telnet session to port 110 at the server I only get a '.' when I give either the command LIST or UIDL.

I've tried searching the internet but came up with nothing :-( What is happening here and why can't the customer collect his 'old' email?