Thanks Phoenix, shortly after I posted I reconfigured the jobs via webmin to check using the root users and found it to work. I'll add a user for the task shortly.
So, POP3 email retrieval is now working fine, I'm happy with the speed too, I've set it to check every 3 minutes and considering that this one is running on an underpowered server, I'm very impressed.
If it matters to anyone, the home setup is using a Compaq 1600 rack server with 512MB ram and two PIII 550MHz chips, the work one is on 1GB Ram and a P4 3.6MHz chip, so quite a difference, but performance is similar (of course the work one will be supporting more users and a lot more email traffic)
Thanks all, it's a great product and although it's tricky to get it all working (when knowledge is limited) it's nice to get there eventually.
There are still a few teething problems though, so I'm sure I'll be back for more help soon
