So have you contacted Telstra and asked them why they have blacklisted you sends mail using the IP 115.66.203.112.

But then that address is not a valid IP address. is has 5 blocks.

115.66.203.112.80  a valid IPV4 address should have 4 blocks and an IP V6 address has eight groups of four hexadecimal digits. Each group is separated from the others by colons (:)  so i is not valid for that either.

So Are you using a VPN that is doing such a good job of hiding your IP address that is is not even using a valid one. Looking at the address a check of the first four blocks and the belongs to a router in Singapore owned by a company called Singnet Solutions Pte Ltd

The last four blocks belong t a company called Lattitude the IP address appears to be in Sydney, but the company is in Brazil.

So are you getting these error when you are connected using a VPN? Or perhaps a free Wifi at a pub or club or a coffee shop.

How are you connecting to the internet?

Hello Matt, once again you got me out of trouble. Once I turned off VPN it all worked fine. I forwarded your replay to my anti virus company Bitdefender. I am now waiting for their replay.

James just emailed me to point out that I could have replayed to question/1466704 instead of posting a new thread to post a replay. I obviously don't know how to find my previous replay. Can you show me the steps for future reference please?. Many thanks again Matt, Ilio Pieroni