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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?

Within the past day or so, which means 7-18-26 or later, some of my email messages on thunderbird for my pc have a "From" description that is not correct. I look at the messages, and the "From" is entirely different than the "From" description when looking at the email message list. I have never encountered this problem before. I'm using thunderbird 152.0.1 64-bit on my pc.

I use Thunderbird 128.2.0esr (64-bit) to read mail from the Outlook server; these are the folder mappings:

imap://<email>@outlook.office365.com/INBOX imap://<email>@outlook.office365.com/Sent imap://<email>@outlook.office365.com/Drafts imap://<email>@outlook.office365.com/Trash

I used to also be able to read the Junk Email folder from the Ourlook server the same way, but the folder disappeared from my Thunderbird a couple of months ago. I tried re-adding it as a sub-folder, which is how I created it in the first place, but it won't appear on the list.

I'm not sure what else to do here. I don't know where the Thunderbird directories are stored locally any more, I'm using Ubintu 24.04.

I didn't knowingly make any changes in Thunderbird, but my Sent folder says there are 2,669 messages in the folder, but displays an envelope and No message found. I upgraded to the latest version. How do I fix this?

(I haven't had time to move all functions to another drive.)

Extech

Hi Everybody All of my folders in Thunderbird have become subfolders, which is annoying, but worst than that, most of them don't have messages in them any more. What have I done, how can I undo it and find those messages? I hope someone can help. thanks Rose

Hi there David

Not sure I'd you will see this... I cannot tell you the steps I took as I followed the path but I now have no emails on my old laptop either... Everything is gone...

Thanks Sally

I have an email account and a web hosting with a reliable service. I have noticed that from time to time some of my thunderbird emails transfer automatically to my website and appear in the 'posts' pages as 'pending'. The site admin email is different from my email address so in theory this should not be happening any suggestions?

PRELUDE: I have several email accounts. All accounts display properly, except one. Yes, this is similar to my question about bottom of the far left [of emails] list of emails - but this is different.

On the far left of Thunderbird is a list of all my email accounts with "Inbox" etcetera. Each email account shows it's Inbox/Sent/Deleted/ except for 1 account. The problem email account only shows it's Title and Inbox northing else. Yes, I tested it and sent emails to it, and used the problem email account to send, create a draft, and they don't show..

The image explains it.

Thanks for reading this ~r

I have 21 filters set up in Thunderbird (originally on the Mac, now on Windows). This is for an IMAP account.

Most of the filters are simple, one match, mark message as read, move to a folder. A few have multiple matches, but the same mark read and move to folder steps.

Some filters work fine, some do not work at all. The ones that are not working are the simple single match ones. There's nothing in the filter log showing what the issue might be. The filter in question doesn't show up.

What can I do to track down what the issue might be?

Thanks.

I have had to replace my laptop and am trying to set up my new one with an existing outlook account on the new device.

It is a Windows 11 device.

I have used the exact server settings etc from my old lap top for the outlook account but get a variety of error messages.

I have explored the use of the Account Hub and also switched that off/on. Same situation.

I attach five screen captured images so far. The first is the version of TB. The second is the window that appears when the account tries to connect and thirdly the small pop up that appears bottom right hand corner of laptop. The remaining two show the server settings and that they passed the connection test.

Other email accounts (gmail & yahoo) have both been set up on the new device and work well.

The account worked on the old laptop and continues to do so. I have set up the outlook account with, to the best of my knowledge, the same settings. The old lap top was a windows 10 device. The new laptop does not have a third party antivirus on it.

I am baffled as to what is happening and what I should do next. Any advice would be great.

I’m on Thunderbird 148.0.1 (aarch64), and having an issue each time I go to my Sent folder. What happens is this. I try to select an email I just sent minutes ago, and Thunderbird scrolls down to almost the last sent email (in my case, as I keep everything, that email could be years old).

This is only on my M1 MacBook Pro, as on my 2018 Intel Mac Mini (both systems are running Sonoma 14.8.4 I can select any recent email in my Sent folder and the selection stays.

I use Thunderbird on Windows 10; I have a verizon.net email account which I access through Thunderbird. Verizon.net email is transferred to the server from AOL Mail, and I have been able to get and send my emails on Thunderbird at verizon.net for years. This week, after Thunderbird's latest update, I have not received any incoming mail on Thunderbird, but I can see my emails on AOL Mail. The technical expert I consulted deduced that the problem is with Thunderbird such that AOL is not connecting to the incoming mail server, even after the password was changed. I can send messages successfully from Thunderbird; the outgoing mail works.

I'm finding threads that include the correct emails for the subject, but also additional emails that do NOT relate to the original subject. How do I pull the other "subjects" from being in the wrong thread and create their own thread. See the highlighted emails in the attached image. Each color represents a separate thread that should stand on its own.

Thanks.

Oh, woe is me. I had both Thunderbird and Firefox open on my desktop, and thought I was typing into Firefox's address bar. But Thunderbird was actually 'live' (selected?) on the desktop, so that's where my keystrokes went. Not sure what I typed or where the cursor was, but suddenly I have two folders in the left Thunderbird pane that I can't figure out how to get rid of. They are both just above my Local Folders: Templates and Archives folders for one email account, and an Archives for another. All three folders are empty (Archives had "2025" subfolders, but I was able to delete those). Keyboard strokes generated these, but they don't delete. What can I do? Can I navigate with Windows Explorer to where these folders actually reside and delete them there? I sure don't want to mess anything up. Many thanks in advance!

After closing the In Box, you'd think there'd be some simple obvious way to open it again. But no. The switch is hidden. Your Help agrees that the switch is nowhere to be found in the Menu Bar (as it obviously ought to be), but that it can be found in the Tool Bar.

The Tool Bar is not found in the Menu Bar either (as it obviously ought to be). Short of relaunching the program, what am I to do?

Did the designer of the interface have an addiction to video games? In video games everything is hidden, as though it were FUN to poke around looking. I have never played a video game. They are not fun. They are a waste of time. All commonly used email tools and windows should be accessible under the Menu Bar. Please fix your program. Meanwhile, please tell me how to open the In Box after closing it. Thank you.

Thunderbird 15.5.1 Mac OS

Can I use Thunderbird to build an incremental local backup/archive of all messages transiting (incoming/outgoing) a webmail account ?

Any idea how to achieve this ?

My problem is:

• A POP3 account will miss all folders except the Inbox. (It's a pity that POP4 has not gained traction yet.)
• An IMAP account creates a mirror, not a backup. Remote deletions in the webmail account must not delete messages from my backup and vice versa.

detailed requirements:

• one-way sync only, since a local backup/archive must be built, not a mirror (two-way synchronization):
• Remote deletions must not cause local deletions (otherwise it would be a mirror, not an archive/backup).
• Local move/delete operations must not be reflected back to the mail server.
• Read‐only access to the mail server: no moves, deletes or flags remotely.
• All messages in all folders must be included in the backup: Inbox, Sent, custom folders, etc. Since POP3 can only back up the Inbox, I will probably have to settle for IMAP to include all folders.
• No duplicates: Messages must not be stored locally more than once.
• Messages must be stored as full offline copies locally (not just headers).