I was on a wired network connected to the Internet and had no issues with web browsing or email. I have moved and am now on a 3rd party wireless network. Note that I have a different POP server and SMTP server as my POP server does not allow outgoing mail.
No problems with web browsing or incoming email but Outlook is unable to log on to the SMTP server.
I can log onto the ISPs web mail system with the same credentials as I have stored in Outlook and send mail with no problems. I can ping the mail server (which is mail.tpg.com.au). The technical staff say that they can see my logins when I log in to the web mail system but don't see anything when I try to log in via Outlook.