Does that also happen in Troubleshoot mode?

I have no idea ! I don't know how to get to use troubleshoot mode, but I will try and get back to you Bob

Yes it is still doing it in troubleshoot mode :(

Yes it is :(

let me get this straight. What does the messaging co have to do with this? I understand they are a paid service that westnet sold all their email customers to. But where does gmail come into this.

I have a thunderbird account, and I can send and receive emails without any difficulty, normally when I send or receive an email a copy is automatically sent to my Gmail account and shows up on my mobile phone.

However for the past few days I keep getting hundreds of copies of "sent emails" going out from thunderbird sent box and ending up in my Gmail account.

The issue I have is "How do I locate inside thunderbird where I can stop my THunderbird emails being sent to Gmail.com ??

I have managed to fix the problem It was solved by going into Thunderbird menu and de-selecting export all emails associated in respect of a single email address Thanks for your help Bob