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Recently Thunderbird quit working with my RCN email account - outgoing server timed out

Thunderbird Email and messaging
woodjim
woodjim

"Connection to outgoing server (SMTP) smtp.rcn.com timed out". I called RCN support and they said my settings looked OK and I tried various combinations but nothing works. I tried turning off firewall but that didn't help. They suggested I contact Thunderbird.

This has been working for years but my last sent message was 4/27/2024. Obviously I don't use the account much!

Server smtp.rcn.com is OK and I tried both ports that RCN said should work. Connection security SSL/TLS (I tried others). Authentication method - encrypted password (I tried others). Username should be OK too - my name before the @rcn.com. That has been that way for a long time.

Any ideas? I can receive emails just fine.

I am on the latest release. 139.0.1 (64-bit)

Thanks!

"Connection to outgoing server (SMTP) smtp.rcn.com timed out". I called RCN support and they said my settings looked OK and I tried various combinations but nothing works. I tried turning off firewall but that didn't help. They suggested I contact Thunderbird. This has been working for years but my last sent message was 4/27/2024. Obviously I don't use the account much! Server smtp.rcn.com is OK and I tried both ports that RCN said should work. Connection security SSL/TLS (I tried others). Authentication method - encrypted password (I tried others). Username should be OK too - my name before the @rcn.com. That has been that way for a long time. Any ideas? I can receive emails just fine. I am on the latest release. 139.0.1 (64-bit) Thanks!