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My Thunderbird goes through periods where it can receive but not send emails. Caused by VPN.

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  • Última resposta de Ilio Pieroni

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My Thunderbird goes through periods where it can receive but not send emails. I am presented with the following message, see attachment. The number may vary but the message is always the same, I am being blacklisted. Can anyone tell me way this is happening, and what to do to fix it, Please? As far as I can remember, it sorts it self out, but it hasn't for over a week now and it is really frustrating. Thank you for reading this plea. Regards Ilio Pieroni

My Thunderbird goes through periods where it can receive but not send emails. I am presented with the following message, see attachment. The number may vary but the message is always the same, I am being blacklisted. Can anyone tell me way this is happening, and what to do to fix it, Please? As far as I can remember, it sorts it self out, but it hasn't for over a week now and it is really frustrating. Thank you for reading this plea. Regards Ilio Pieroni
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Alterado por Wayne Mery em

Solução escolhida

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

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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?

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Solução escolhida

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