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I am getting a request in a new window to enter credentials for pop.gmail.com It populates with my emai address and then the next page from Google says -

'400. That’s an error. The server cannot process the request because it is malformed. It should not be retried. That’s all we know.'

Should I try to download a new version of Thunderbird (currently using 115.15.0) ? Would that overwrite any errors? If so, should I remove the old version first, or will it simply write on top of the old one? Will my old emails still be intact - and my personal settings?

If different please advise - in the simplest of languages, please !!

Thanks.

Hi

 I am using version 115.14.0 (64-bit) and I am using Fedora 39, up to date OS.  I have been using ThunderBird for a very long time.  I have been experiencing an issue which, unfortunately, seems to come and go.  I am experiencing this issue on 2 separate physical computers.  How can I restore the list of emails under any account when they are not visible?
 This is very troubling ...

Robert

All incoming emails have attachment of same photo on them when I click to open the email to read. They do not have what the sender is sending us. [edited phone# from public community support forum] Thank you, Shanon TMC, Inc.

Thunderbird 128.2.2esr (64-bit) stopped sending emails. It receives OK. This happens in web.com who is my isp. The error message says "Sending of the message failed. An error occurred while sending mail. The mail server responded: Domain Spoofing Prohibited. Please verify that your email address is correct in your account settings and try again." Do you have any idea what the problem is?

While using Thunderbird I found a new e mail address had appeared in the program. This address does not work or seem to cause a problem but I wish to get rid of it. Does anyone know to do this

Basically, I'm trying to use Thunderbird to clear some space on my Gmail account. I'm using IMAP. However that just won't work (most of the time). If I archive emails to a local archive or move it to a local folder, a) nothing happens, b) the files are actually moved (and appear in the archive folders)... but the mails remain on the server when checking through Gmail itself. Also, the mails reappear after 10-20 minutes. c) mails are actually moved and they are removed from the server. Mostly it's a or b.

I have tried all deletion options... delete directly (doesn't appear to work), mark as deleted (won't free up space) or move to Trash. Depending on the folder it used to work for a short while, with the mails appearing in the trash folder, ready for deletion. But that stopped working again.

This is all super frustrating and I have no idea if this is a bug or expected behaviour.

I just finally got this put on my new computer and the whole format (arrangement) is not the way I originally had it set up. Need help with setting up how emails received and sent out. Thanks

I installed Thunderbird and typed in my Office 365 email information to connect my account. Thunderbird found the correct IMAP settings, which I verified on Microsoft's website. It proceeds to open a browser so I can authenticate my account. After that succeeds it starts downloading all of my messages & folders. I thought everything went fine until I attempted to send a message. I get the following error:

Login to server smtp.office365.com with username me@mydomain.com has failed.

It gives me the option to enter a new password, which doesn't make sense since it's oAuth2 but I created an app password to see if that would work, and it didn't. The only other options are cancel & retry which don't help either.

I thought maybe something went wrong with the authentication process so I uninstalled thunderbird and started again with the same results. I've tried many other server settings, but nothing works, so I'm here.

Current Settings:

Server Name: smtp.office365.com User Name: me@mydomain.com Authentication Method: oAuth2 Security: STARTTLS Port: 587

I've tried: Using Port 465 / SSL/TLS Using Port 465 / STARTLS Using Port 587 / SSL/TLS Changing Auth method to Normal Password and then using app-specific password. Uninstall / Resintsall

One final thing to note: I followed the same process with my fastmail.com account, which worked flawlessly. I can send & receive fine.

I see that part of whats new in this release FIXED = fixed

Some users were unable to log in to Microsoft 365

-However NOW with this version I cannot login.

Please advise

The configuration settings have not changed re: Authorization. Anyone else with this issue? TIA

When I logged on this morning and opened Thunderbird, it downloaded headers of messages but when I opened them there was no sender or content, just a code _005_BN8PR14MB2900509BCA163B950DE51AAC9AE59BN8PR14MB2900namp_--

Some time ago Thunderbird changed from downloaded header and message as one, to downloading all the headers and then downloading the message content. At the moment I can access old messages but none that have tried to download this morning.

Can anyone help please?

Carol

When I want to view an email, I don't see the one I open, but another email is displayed, where an image is inserted into the body of the email. Like it's stuck somehow. It's annoying because I don't know what is written in the correct email. Restarting the program or the computer did not help.

PDF attachments to emails are sometimes corrupt. They are not displayed when the email is opened (only a blue line is shown); after they are saved they cannot be opened (Adobe and also EDGE give a message that the file is damaged). The same attachments can be opened and saved correctly using the free Outlook application from Windows. I noticed the problem this month. The installed version of Thunderbird is Thunderbird 128.2.2 esr - but the problem also existed with version 128.2.1.

since 8/22/24 I have been unable to send email from one of my personal domains. Same install of T-Bird successfully sends SMTP via Gmail and my other domains.

I receive the error shown in the first photo below. Sending of the message failed. An error occurred while sending mail. Outgoing server (SMTP) error. The server responded: us2.outbound.mailhostbox.com ESMTP not accepting connections.

I have been back and forth with the domain tech support. Here are the email content (parsed for easy reading)

Me > I am having difficulty sending email. > I can POP email without issue. > I am using the most recent version of Thunderbird; version 128.2.0esr (64-bit) > When I send (with or without an attachment) I get the following error: error as shown above > I have never seen this error before and cannot find it in your knowledgebase files. > My SMTP settings: > > server name: smtp.drachenfelspress.com > Port: 587 > Connection security: None > Authentication method: Password; transmitted insecurely > User Name: mcaputo@drachenfelspress.com

Tech: If you are able to download emails from our server but unable to send out emails through the same, then it is likely that your Internet service provider is blocking port 25 on your local network. For such ISPs, you must use their SMTP server to send out mails on their network. Customer Support - TH

WELL Since I was using 587 that didn't help at all.

ME the error says YOUR server, "US2.outbound.mailhostbox.com ESMTP not accepting connections." This is YOUR error, not my ISP. I was using port 587, my ISP does not block port 25.

Tech try non-SSL using the following: STARTTLS Auth Normal change server name to smtp.<yourdomain>.com

Me No change

Tech Try reducing TLS version back to 1.0

Me No difference. Restored TLS 1.3

Tech return to the mailhostbox.com server Port 587 STARTTLS Normal full username

ME ok, no difference. That is where we started, didn't work then, doesn't work now. (second photo)

Tech Try port 25

ME Same results

Tech <resets my password>

Me Did you reset my password overnight?

Tech To investigate the issue, we needed to reset the password for mcaputo@drachenfelspress.com, to enable us to configure the Thunderbird email client on our end. The temporary password is "Se!!P)iqk2" We have successfully created a Thunderbird account and were able to send emails through it without any complications. The configurations we utilized are displayed in the screenshot provided below: us2.outbound.mailhostbox.com Port 587 STARTTLS Normal full username

Then change your password.

Me I appreciate your response. HOWEVER the issue remains.

Tech We have already replied to you on this matter.

ME Tried sending on port 465 and it indicated "sending" but hung there. Using Telnet I am able to access the us2.smtp.mailhostbox.com on port 587 but I cannot trigger an AUTH login through TELNET. (see CMD screenshot below)

Tech What is your IP address?

ME It is not static, but today's is (IP address at the time given)

Tech We have done further testing by setting the ThunderBird email client for mcaputo@drachenfelspress.com to both SSL and Non SSL connections. We can see both the implementations being fetched correctly without any issues. <provides two sets of POP and IMAP settings>

ME I can POP successfully, have always been able to. Problem is with SMTP, outbound mail.

Tech Provides two incomplete setting combinations: us2.smtp.mailboxhost.com port 587 smtp.drachenfelspress.com port 25 Upon using any of the two implementations, SSL or Non SSL as configured above, there should be no issues in setting up the email client.

The SMTP and IMAP passwords (if asked any) will be the same as your current email account password.

We are unable to replicate the issue you mentioned. Customer Support - TH

ME I am unable to replicate your success. I still cannot SEND email.

Tech We have rechecked and can confirm that we are able to setup the email client on the latest version of thunderbird i.e 128.2.1 as well using the same IMAP settings as shared in previous email. We are afraid that we are unable to replicate the issue you are reporting after numerous tests from our end. As a suggestion, could you try to connect to your mail account from a different network or ISP? Customer Support - TH

ME Again, IMAP is not used on this account the issue is with OUTGOING mail. Tried both SSL and non-SSL settings for drachenfelspress.com outgoing mail will not send.

That's ALL I have right now. I am going out right now to try to send email from a laptop with a fresh t-bird install while sitting in a McDonalds on their wifi...

Help?

Canon Scanner issue with Thunderbird using MP network EX 2.0, I have 4 win 10 systems all using LiDe200 and 210 scanners with similar problems, 2 systems I can attach emails to Thunderbird only manually now as the Thinderbird email client isnt shown on the dropdown box only (None attach manually) and the other 2 systems cant send anything at all, comes up with the above and the with a message saying no program is accociated with it, even though Thunderbird is the default email client ............when I try to attached it to an email ............... I have NO IDEA how to fix this and I'm not technically very good either so need answers I can understand and do with out technical jargon I dont understand, I did ask a computer guy who does our systems but he didnt know what the problem was and had no solution for that. I am hoping you can help with it as I'm super frustrated with it, as it came on the back of another Thinderbird issue I have with security exceptions which defies being fixed. HELLLP !

Hi, Please see screenshot. The "From" field does not have my address and there is nothing to select in the drop down. I cannot type into the body of the email either. Also, when I click on "About Thunderbird" I do not get a pop-up window with version. I am receiving email. Thank you Cams

Hi

I recently updated to 128.2.1 esr and my message filters are not working. When I open "Tools" > "Message Filters" the filter list is empty but when I open the msgFilterRules.dat file on my profile the message filters are there. (I made lot's of them.)