I had mail working on my Nexus for my Xtra Account.
However, I put on a new ROM and later found that my Xtra settings were gone (after a restore).
I have tried and searched for the correct POP3 settings.
I don't really care (I think) whether I use POP3 or IMAP.

Using OUTLOOK from home, 2 devices use 995,SSL / 25 None.
I don't have a smartphone.

I have tried (from the Telecom site):
995 SSL/465 SSL and
110 None, 587 None (this gave me the message 'Couldn't open connection to Server).

I found this advice in http://www.geekzone.co.nz/forums.asp?forumid=39&topicid=102630 but no joy.

Can someone please give me the correct settings.