@Jennifer Browne said
my laptop has not accepted Bigpond as my email server
I am not a BigPond/Telstra user, so I can't test myself. But the reports I've seen indicate that you may have to use a Telstra generated App Password when trying to add your BigPond account to Outlook.
Generate a Telstra App Password
Login to your Telstra/BigPond webmail using a Browser
Click on the nine-dots in the top left menu and select “Settings” and then click on “Accounts”. Look for the "GENERATE PASSWORD" button.
Copy and paste the generated password to a text document so you can copy/paste it into Outlook when needed.
Remove any existing Outlook Telstra/BigPond account
See the "Remove an account" section of this doc
https://support.microsoft.com/en-us/office/add-an-email-account-to-outlook-for-windows-6e27792a-9267-4aa4-8bb6-c84ef146101b
Add back the Telstra/BigPond account to Outlook
See the "Add a new account" section of this doc
https://support.microsoft.com/en-us/office/add-an-email-account-to-outlook-for-windows-6e27792a-9267-4aa4-8bb6-c84ef146101b
But any place it ask for a password, copy/paste the Telstra App Password you generated and saved in a text document, not your normal email account password.
If you hit any errors trying this, please report back with a screen shot of the error message.