An error occurred during communication with the server

AN ERROR OCCURRED DURING COMMUNICATION WITH THE SERVER CODE

Can you open the link in Firefox? Firefox and Thunderbird share code in this area, so any error message in Firefox might be illuminating. So I think we need to look somewhere else for the lack of ciphers. However when I create an email with a link to ww.:443 it does work. So it might be unscrupulous business practices form part of this answer. So I take this server name and port and put it into Firefox and in the web console of Firefox I see all sorts of error related to cookie sniffing by zazzle of Google double click face book and a number of others because Firefox has tracking cookies disabled. I would expect requests to a www server to be HTTP or HTTPS requests on ports 80 (unencrypted) or 443 (Encrypted)

WWW server names are for the world wide web (WWW) which these days is just called the web. It is not and never should be considered a 'fix' it is at best a very temporary workaround.ДЇor example, one server is All servers are from well known companies. Going back a version just installs a version with what is considered to be broken security. cyphers which the message appear to be about are deprecated all the time when some mathematical genius publishes a way to decrypt them. The security landscape is a fairly fast moving target. It never happened before I ventured into 6.0.1, and has never happened since I got rid of it. So you see this error message when you display the messages, not when you get the mail. This error shows up for messages that I receive regularly.

An error occurred during communication with the server