Hi I changed from Telstra to Optus as my service provider and was able to keep my @bigpond.com email address.
I have Outlook on my computer with both pop and imap mail servers. Does anyone know the correct set up to get these working. I think I need the outgoing address as mail.optus.com.au.
Are you sure your bigpond will last indefinitely,
Can't help with your settings but once you get it sorted I would recommend switching away from any ISP related email address to one that can be fully portable (e.g. outlook.com , gmail.com, etc.)