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Used my settings from my webmail and still won't work in Thunderbird

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Hey folks.

I have used Thunderbird for my Gmail acounts with no issues.

Decided to move all my work accounts into Thunderbird as I was using Mailbird for them and occasionally emails email seem to hang up and get stuck, too many for me to want to stay.

I entered all the settings from my cPanel settings but it simply won't work for either of my work emails.

They work just fine on Mailbird except the issue mentioned and I checked the server settings there and every thing matches.

Just won't work on Thunderbird.

Any ideas?

Hey folks. I have used Thunderbird for my Gmail acounts with no issues. Decided to move all my work accounts into Thunderbird as I was using Mailbird for them and occasionally emails email seem to hang up and get stuck, too many for me to want to stay. I entered all the settings from my cPanel settings but it simply won't work for either of my work emails. They work just fine on Mailbird except the issue mentioned and I checked the server settings there and every thing matches. Just won't work on Thunderbird. Any ideas?

All Replies (4)

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It's not the username/password as I can use that with no issues to log into my webmail.

But I get this error - https://share.zight.com/4guRl1gQ

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Okay, I guess I'm moving on from Thunderbird. Works with any other tool I've tried but not Thunderbird

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How come you did not replicate the settings from mailbird?

The error message actually has many possible causes, most not related too either the password or user name. Generally the issues relate to either the software firewall disabling Thunderbird from accessing the internet (this is obvious if you are setting up a mail account from a known provider listed here https://autoconfig.thunderbird.net/v1.1/. The initial yellow response should be found, when firewall issues occur you get other errors.) or other third party software messing where it does not belong.

Antivirus product frequently cause issues, from many sources, but the most common are;

  1. They block access to the internet as they inappropriately block the probing as an attempted denial of services (Nortons products specifically require their SONAR thing turned off I find)
  2. They attempt to scan the connection using a self signed certificate that is untrusted by Thunderbird.

This latter is often the reason for Thunderbird failing when other products do not. Thunderbird maintains it's own trusted certificates manager and builtin chain of trust. Windows which is used by just about every other platform has automation that allows malware to insert their own self signed certificates in the store just as the antivirus products do. Basically negating the benefits of encrypted connections. Thunderbird is more secure, but requires manual intervention in the certificate issue if you want to waste time scanning mail. I don't, so use Microsoft Defender which has no mail scanner.

Each antivirus vendor has instructions on how you can manually add their self signed certificate to the chain of trust in the certificate store of Firefox and Thunderbird, as both use the same technology in this instance.

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Matt said

How come you did not replicate the settings from mailbird?

I did, that was the first thing I tried.

I'll play with these other options you presented tomorrow. I use BitDefender for antivirus so maybe that is it, we'll see.