Great, thanks for the pointer - I can now read the emails. Other people have had some odd issues with IMAP IDLE on the E61i so I was trying to disable it via the /ni switch.
Out of interest, how would I completely disable IMAP IDLE on the server? Now I am correctly using IDLE my phone maintains a permanent 3G connection (as you would expect), but it canes the battery and I would like to try it without a permanent connection. I would use the /ni switch to accomplish this, but the E61i doesn't listen to the server
I've also got another problem - reading emails does not mark them as read in the web client, until I receive another new message, then the old message is marked as read.
Thanks
Matt