I was able to set it up to retrieve mail from my isp with my isp login and send email using smtp.xtra.co.nz.
I have a GTran modem in the notebook so when I couldn't get a wireless connection to a nearby network I would use the GTran modem to send retrieve emails.
Now I have connected a Treo 750 to XT I can retrieve emails ok. I set it up the same as the Samsung, except I can't check "use the setting same name and password for sendinge-mail".
Sending emails comes up with a 550 relaying is not allowed.
I changed the smtp setting to my smtp2go account and registered the sender address details with smtp2go and I now have send & receive emails working.
What settings should I use to get the email sending using smtp.xtra.co.nz?