Thunderbird 102.0.3 no longer asks to accept a self signed certificate for IMAP

 Linux, thunderbird  Comments Off on Thunderbird 102.0.3 no longer asks to accept a self signed certificate for IMAP
Jul 282022

One of my computer’s hard disk didn’t survive a recent power failure so I had to set up its Thunderbird client again (a backup didn’t work, don’t ask). My internal IMAP server uses a self signed certificate which worked like a charm until now. Normally, the first time Thunderbird connects to the server after the account has been set up, it will display a warning for this certificate with an option to permanently accept it. This warning did not come, so no emails were available. The same procedure worked fine for the similarly configured SMTP server, so apparently the feature/workaround for self signed certificates wasn’t removed on purpose.

I found two workarounds for this:

  1. Start with an older Thunderbird version (102.0.0 worked fine for me) and upgrade to the latest one. Unfortunately older versions seem to vanish from the interwebs within a very short time when a new release comes out (or equally possible my Google Fu has failed me again [it did, here they are]).
  2. With Thunderbird 102.0.3, in Account Settings -> Server Settings set Connection Security from “SSL/TLS” to “none”, then try to get the emails. All of a sudden the missing dialog popped up, I could accept the certificate and emails started being downloaded. While that was running, I changed the setting back to “TLS/SSL” and all seems good now.
    I found this by pure chance because I was desperate enough to completely disable SSL just to get to my emails.

I am posting this so I can look it up later in case I need it again (Google will hopefully turn it up when I search for a solution). But if it helps others too: You are welcome.

I’m sure many people are now itching to suggest other possible solutions. If your’s is “Use Let’s encrypt certificates”, please read the following link on why you might not want to do that for internal servers.

 Posted by on 2022-07-28 at 09:57

Spammers are stupid

 thunderbird  Comments Off on Spammers are stupid
Sep 092021

I just got an unsolicited offer on the catchall email account of my employer, meant for a guy who no longer works there. Usually I simply delete emails like that but this one was a rare case that actually looked as if it might be of interest to some other guy in the company (No, it was not about a penis enlargement nor about Viagra 😉 It was actually well targeted.). So I wanted to forward it to him.

Unfortunately it turned out that the email was HTML only, no text part at all. My email client is configured to not allow forwarding of HTML only emails. Yes, I could have changed that, but I didn’t remember where that setting is located. Guess what? I didn’t bother.

 Posted by on 2021-09-09 at 14:46

Display text attachments inline in Thunderbird 68 and later

 thunderbird  Comments Off on Display text attachments inline in Thunderbird 68 and later
Jul 082020

Apparently there has been a change in Thunderbird 68 so it no longer displays text attachments inline even though View -> Display Attachements Inline is turned on.

There is a solution to this though:

  • Open Tools -> Options
  • Select the Advanced page
  • Switch to the General tab
  • Start the Config editor (button on the bottom right)
  • Press “I accept the risk”
  • change the “mail.inline_attachments.text” value to true

Source: Mozilla Support page

 Posted by on 2020-07-08 at 11:14

When Mozilla Thunderbird gives you 0 bytes attachments

 thunderbird  Comments Off on When Mozilla Thunderbird gives you 0 bytes attachments
Feb 212018

.. make lemonade. Yes, that would be nice, but unfortunately we are not talking about life and lemons here.

Today a coworker had a problem with Mozilla Thunderbird: She could no longer open attachments sent to her. Saving these attachments resulted in 0 byte files.

This nearly drove me nuts:

The email source looked fine to me. When she forwarded these emails to me, I could open and save these attachments fine, so it wasn’t the emails.

Also, attachments sent to a different account in her Thunderbird worked fine. So it wasn’t Thunderbird or the virus scanner or some kind of access rights problem.

As a test, I installed a new Thunderbird Portable for her account, guess what? It could also open these attachments.

I eventually solved the problem by removing that apparently defective account from Thunderbird and adding it again. Everything started to work normal.

There are days when you just have to accept that you don’t understand why it works now and why it didn’t work before. I definitely hate it when that happens.

 Posted by on 2018-02-21 at 14:42

Thunderbird and plain text e-mails

 thunderbird  Comments Off on Thunderbird and plain text e-mails
Sep 242013

One of the things that have irked me with Thunderbird from the beginning was its insistence of defaulting to HTML e-mails. E-mail for me is about the text, not about formatting and even less about embedding pictures and what have you. But Thunderbird descends from Netscape Communicator who was the pioneer in this annoying HTML stuff. 🙁

There has always been an option to default to plain text but it has moved around the configuration basically with every update. The latest version has got it under Tools/Account settings. There you can – separately for each account – under Composition & Adressing, set the option “Compose messages in HTML format”, or rather unset that option.

I hope this will be the last time I have to hunt for it.

 Posted by on 2013-09-24 at 14:44