Hi TPG Community, A couple of weeks ago my sending of emails was blocked on my PC, iPhone & iPad. I can receive emails on all 3 devices With a series of error messages on the PC - starting with: Subject: Re: Error message 554 5.7.1 [TPG-S02] [21841EJw000901] Message rejected as it appears to be spam. As I followed the postmaster@tpg.com.au instructions the error messages moved on to: Error-5-7-8-TPG-A02/...error 5.7.8 [TPG-A02] Authentication denied. User XXXXXX@tpg.com.au is banned from using SMTP AUTH due to previous abuse With my IPad and IPhone showing: CANNOT SEND MAIL The sender address was invalid. I have emailed back to postmaster-tpg.com.au three times (via another email address from the same PC which appeared to send with cc to the affected email address coming through. I have had no response since 15/02/2022 despite my getting back to them to confirm their workaround for my problem has not worked I know of no abuse I have done to anybody. Based on the fact that I have done all the rebooting / changing of passwords etc and reading the TPG community knowledge base I can only conclude my sending of emails is manually blocked by TPG themselves.  How long is a reasonable time to expect a response from postmaster-tpg.com.au to fix my problem? Regards, Peter.   ... View more