Thunderbird email download blockage
I'm using latest version Thunderbird 78.10 and am now unable to download mail from my domain POP3 server. As soon as TB attempts to download mail I get the message: "Connection to server pop3.domain was reset". No mail is received. This problem does not arise with the Outlook mail program on my other computer, nor on my iPhone. All my mail downloads normally in those other mail programs. I've uninstalled my ESET anti-virus but this does not solve the problem. My ISP email technicians tell me that this problem is unique to Thunderbird. How can I safely overcome this TB email download blockage ?
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BTW, I have already downgraded the security.tls.version.min value from 3 to 1 in the Config Editor under Options, but this did NOT solve the problem. I still get the same "connection to server was reset" message.
I had a very similar issue. See https://thunderbirdtweaks.blogspot.com/2020/12/eset-stopped-me-getting-mail.html