OpieMail on JLIme Donkey - Error

Hi,
I've searched in vain via Google and here for a solution ...
I have installed JLime on my 690 and all working fine (tho a bit slow) apart from the bundled Mail app. It is OpieMail. I have set up a POP3 mail account and an SMTP account. Sending mail is fine, but when trying to receive I get an "Error Initializing folder" message in the status bar.

Opie merely say that the server names are not correct - I have checked this several times and they are fine - Pocket Outlook manages it! (which is saying something)

Other posts relate to a possible space issue ... I am running JLime on a 1Gb flash drive and it is a brand new install, so I do not think taht is the issue.

Any pointers gratefully received!