Could you please help me with this problem? I am receiving the below error message when trying to send an email from Outlook. I can still send an email directly from my TPG post office.
I have read the advice on the Community TPG to change my password. I have done so, but it doesn't make a difference. The below error message has come from my Outlook.
We couldn't deliver your message.
Original message details Created date: 20/07/2022 15:33:40 Sender address: firstname.lastname@example.org Recipient addresses: email@example.com Subject: Test 5
Technical details SmtpSubmissionPermanent5XXException: Smtp submission failed. Server 'mail.tpg.com.au' Port '587'. --> Unexpected SMTP server response. Expected: 250, actual: 535, whole response: 535 5.7.8 [TPG-A02] Authentication denied. User firstname.lastname@example.org is banned from using SMTP AUTH due to previous abuse