Thunderbird Community Forum

When replying to an email or sending a new mail I get the message :- An error occurred while sending mail. Server responded : You need to authenticate when sending mail from (ip address) Please check "message Recipient" and try again. How do I authenticate ? Thanks140.7.1

I was having problems with my chromebook. when I start my chromebook and i click on the thunderbird icon it doesn't open ! I have restored my chrombook and reinstalled thunderbird again but the problem is still there. The only way to access thunderbird is to open linux and type in thunderbird and then i have access to thunderbird once I turn off my chromebook and then reopen it once again thunderbird is not working !

Edit: Just saw it was already a known issue: https://bugzilla.mozilla.org/show_bug.cgi?id=1959171

I've found out that on both Linux and Windows since the last update (154.0), the PDFs printed directly from the Thunderbird PDF viewer, prints out blank PDF.

To recreate this, open a PDF attachment in an email, simple double click on it, in the top right corner on the tool bar, press the little printer icon, choose either "Save as PDF" or print to the actual printer, in both cases, you will get one blank PDF page.

I have Thunderbird installed on a linux o/s running Zorin 18.1 the version of thunderbird is shown in uploaded images. I wish to export everything in my profile to a folder which Evolution can access when asked to import. I then intend to delete Thunderbird and carry on with Evolution as my email app of choice. In anticipation John

I'm on an up-to-date Ubuntu 24.04 on a ThinkPenguin J4 laptop with 25G of memory, using latest Thunderbird 154.0 [Mozilla Thunderbird Snap for Ubuntu - ubuntu-snap-build - 1.0]

This has been a problem even before the transition to 153-154 (very slow login), but now it is almost impossible to log in.

I click on Thunderbird icon, it comes up and asks for my password. After PW is entered, it hangs with the above message for almost 2 minutes before my emails show up.

Ping to posteo.de is immediate on this same laptop, and K9-Mail on my Droid works fine.

Thanks.

Hi I can not access and install addons.

https://addons.thunderbird.net/de/thunderbird/

Cloudflare seem to work?!

Tested with my phone as well (cellular connection)

Is this a general issue and did they notice it already?

Best regards :)

Like this one:https://support.mozilla.org/en-US/questions/1180585

This problem is alive and kicking. The solution is no longer a solution.

I spend the last hour or so in sheer panic and doubting my sanitiy as an email I was just reading disappeared from every mailbox I have here (I have 8 mailboxes in Thunderbird) . Also for whatever reason search is missing from the title bar.

The email was "archived" by Thunderbird inthe "Local Folders" I never use local folders as local folders is silly in 2026 imo. I have my own mailserver which is perfectly save and backuped and stuf I don't need yet another location were mail can hide.

Anyway that was a bit of a rant. This would not have happend if this sille ¨Local Folders" didn´t exist at all. But I seem unable to get rid of it.

How do I remove ¨Local Folders" from Thunderbird?

I have been trying to archive my 25 years of Yahoo mail before they delete most of it. I thought I had it done. Now I have had to start again. Did you know that setting Thunderbird to ISAM download all your emails will only get the first 10,000 of any folder with more than that in it? Yes indeed, so it seems. We have to set the yahoo download server to the 'export' server. prefix the existing name with 'export'.

)

I am locked out of my yahoo accounts now. And the attempts I made earlier to delete stuff to make room have deleted stuff that never got downloaded/archived because from a folder with more than 10,000. That's how it goes. Just thought I'd warn anyone who might be as unknowing as I was. I took advice to the contrary and believed it.

When i attempt to retrieve my email I get the following message at the top of my screen, "The certificate for POP3.pangia.biz expired of 8/13/26. How do I renew it? My email address is jahoagy@signalpeak.net. Thank you John Hoagland.

I was a satisfied user of the Thunderbird e-mail client. I especially enjoyed the ability to toggle into darkmode when browsing and reading my e-mail. The previous toggle I used to activate that feature is missing, and I cannot locate a work around to turn it back on. Any assistance would be greatly appreciated. Thanks

TB suddenly moves messages from inbox to trash automatically without any interaction. Search through the forrum shows that it has been asked for already, see https://support.mozilla.org/en-US/questions/1588804, similar postings can also be found with you search engine.

As described in other postings, the messages are moved from Inbox to trash. When moving them back manually from trash to inbox, they are moved to trash again immediately.

• it happens for the default account only,
• there're no filters at all in TB,
• junk detection is disabled,
• Settings->General Storage is all disabled,
• (account)->Settings->Server Settings has checked "move deleted messages to trash",
• (account)->Settings->Storage is all disabled,
• Inbox->Properties "Repair folder" does not help,
• Inbox->Properties "rules is set to "use account settings" (and greyd out "do not delete messages"),
• exactly same behaviour when starting TB in save mode,
• manually deleting all *.msf files (for inbox) does not help,
• manually deleting xulstore.json does not help,

Additional notes, which are not related to the problem, IMHO:

• IMAP on port 993,
• no other clients anywhere are connected to that account,
• TB configured for more than 10 accounts, more than 500 folders and sub-folders,
• host with > 16GB RAM, TB uses 3GB virt,
• problem observerd in older TB also, at least 13x.x

I'd be happy to debug/trace the problem if someone can give me detailled insructions how to start TB with debugging. Please feel free to ask for about:config settings as they are non-ambiguous and language independent ;-)

Thanks.