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Mail can't verify the identity of the server "".

First Timer

Mail presents this message box when trying  to connect to This has only started since AVG released an update to their internet security.


The certificate for this server is invalid. You might be connecting to a server that is pretending to be "" which could put your confidential information at risk. Would you like to connect to the server anyway?


The certificate

issued by: AVG untrusted CA

Expires: Friday 14 May 2021 at 00:59:59 British Summer Time

X This certificate was signed by an unknown authority.


I tried to log on to the mail server through the talktalk web site and got a similar message in the firefox browser. The same thing happened to me a while back with the natwest web site, AVG investigated and could not find an answer. natwest checked their site was secure. Firefox says it's a problem with the web site. where do I go from here?