Error Message - Have been able to receive emails but not send on Iphone / Ipad whilst away and laptop since returning. I have reset password multiple times and waited more than 30 minute as suggested by other posts. Can send via online Post office.
An error occurred while sending mail. The mail server responded: 535 5.7.8 [TPG-A02] Authentication denied. User firstname.lastname@example.org is banned from using SMTP AUTH due to previous abuse. Please verify that your email address is correct in your account settings and try again.