Thunderbird: форум сообщества

Good afternoon!

Thanks for the great customer!

We have several computers on a local network without internet access. There is a problem in Thunderbird 143 - files are downloading slowly. POP3 and IMAP are the same. From several tens of seconds to one and a half minutes, 11 files from the letter were downloaded, totaling 20 MB. There is such a feature - if you disconnect the network adapter, the problem practically disappears. There was no such problem in the Thunderbird 115 version. The Em client and Mailbird clients were also installed for the experiment - they also do not have such a problem.

The mailbox is small and contains 20-30 almost empty emails.

Tell me, please, what can be done about it?

Sincerely, Yaroslav.

I've been using Thunderbird on a Windows machine for years. I now have an iMac and recently downloaded Thunderbird to start transitioning over. When I try to set up an existing Email address, the configuration is found in the Mozilla ISP database. After I enter the password though (mobile.charter.net), I get an error stating "Unable to log in at server. Probably wrong configuration, username or password". The password is correct and works on the Thunderbird version on the Windows machine. I have multiple Email addresses and I get the same error on all with verified correct passwords. Any help to correctly install would be greatly appreciated!

Hi I am using Win 10 and update 140. I updated yesterday.

I have been unable to rebuild my Inbox after doing an Inbox repair. It is having trouble staying connected to my email server, imap.comcast.net. The lower left message continually shifts from Sending Login Info, to Connecting to imap.comcast.net, to Connected, to Opening Inbox folder to looking up imap.comcast.net.

I repaired the inbox because all of a sudden I could not open new messages. I would click on them and it would say loading message but remain blank.

I have also had periodic problems with network and file errors. Just before this happened, I could send a message but not copy it to my Sent folder because of these errors.

If I uninstalled and reinstalled Thunderbird would it go back to the way it was?

Should I do a system restore?

By the way I am connected online and at a high speed. so that is not the problem

Thank you Richard Higgins Concord MA

I've been trying to connect now for 12 hours and have only recovered a fraction

Hello All,

After 7 years Thunderbird is no longer working with my comcast email address. I know this is probably a comcast issue but after more then a week trying to get any sort of help from them I have given up on Comcast and turned here hoping this is some simple issue that someone has seen.

Comcast webmail access works fine

Via Thunderbird - I can send a message although it will not make a copy of the sent message and long after the message is actually sent I am looking at a message in TB that says 'Connecting to imap.comcast.net, which eventually times out telling me it cannot make a copy of the message.

I receive no messages at all

Nothing has changed on my end of the configuration

Any insight or ideas would be appreciated.

My basic Server Settings Are imap.comcast.net Port 995 SSL/TLS Normal Password

Thank you.

Hi,

today Thunderbird doesnt send nor discharge emails from gmail. I've seen that yesterday (december 10) it was an update. I dont know it the problem it's related or not, but the program doesnt work, it seems that it tries to connect with server but it cant. If I send an email from Gmail page it works.

Thanks for your help miquel arderiu

When I open the Thunderbird desktop app we receive this popup error message:

"Unable to establish TLS connection to POP3 server. The server may be down or may be incorrectly configured. Please verify the correct configuration in the Server Settings for your mail server in the Account Settings window and try again."

I have not found any configuration under the account settings to help with this, but if anyone has any suggestions to walk me through this to establish a connection again that would be most appreciated.

Additionally, when I try to send an email I receive the message: "Login to server smtp.cybermesa.com with username centinela failed."

After closing the error message box I received another error message: "Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) smtp.cybermesa.com timed out. Try again."

Is our issue then with Cybermesa and not Thunderbird? Or Is something wrong with Thunderbird due to our initial error message we received? Any suggestions is much appreciated.

I have been using Thunderbird for a few months and changed my Google Password(even though Im not quite sure if the error wasnt already occuring before that), but now when I go on Thunderbird it gives me a popup window that says "Enter credentials for name@gmail.com on imap.gmail.com". Theres a field for the email-adress, but when I click "Next" theres the following error: "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."

These are the things I tried: Entering the old or new Password. Checked if the config is set to OAuth2 in both incoming and outgoing servers and enabled on Gmail-Account. Deleted and tried to (unsuccessfully) reregister my Thunderbird-Account. The same error pops up when it checks my password after the configuration.

I dont know if the password change is actually the cause, since I think I remember the error message appearing earlier today, before I changed the password, but Im not sure. Also, I have another account linked to my Thunderbird, with no changed credentials, and while there is no similar error message, thunderbird suddenly also has problems connecting to it and asks to retry a few times (3-4) before actually connecting everytime I open it.

I keep getting this message from google: "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.” (see screen grab attached)

I then click on cancel to get it off my email screen. However it continues to pop up whenever I try to get my email, even though the mail comes through, it says can not connect to server. Very confusing. Anyone have this issue?

I cannot access my email on my computer or send out email since the latest update. I seem to be offline. Is it because my operating system old? Please tell me what I need to know to fix this problem. Thank you for your assistance.

本件はIMAPでMicrosoft365アカウントをサインインしようとしたときに発生している事象です。 最初のユーザー追加画面で氏名とメールアドレスを入力します。 その後、メールアカウントの種類を選択する画面でIMAPを選択して「続ける」をクリックしても「設定を検証できませんでした。ユーザー名とパスワードが正しい場合は、サーバー管理者があなたの選択した設定を無効化している可能性があります。別のプロトコルを選択してみてください。」と表示され追加ができません。 上記メールアカウント選択画面で「設定を編集」をクリックしても結果は同様ですが、「詳細設定」→「テスト」をクリックすると、「次のアカウント設定が、指定されたサーバーを調べることにより見つかりました: 」と表示はされます。 しかし、続けようとすると「受信サーバーの設定がすでに存在しています。」と表示されてしまいます。 なお、Exchangeを選択した場合は追加できます。 Microsoft365アカウントについてはIMAPを有効化していますのでアクセスがブロックされているわけではないと考えています。 解決策を教えてください。

Why can't I send outgoing email on my BT Premium email account from within Thunderbird, when the Norton VPN. I get a timed out or policy block message. Somewhat perversely, it works when the VPN connection is on. although you warn that VPN connections may be rejected.

Any info or ideas?

I just installed NORD VPN, and I can no longer send any emails in Thunderbird. Receiving is just fine. Gmail works fine. The addresses in Thunderbird are all Spectrum charter.net addresses. I have spent over 5 hours trying to get his working, seeking help from every possible source that I could think of. The spectrum addresses can send and receive just fine when logging into spectrum. This is probably a pretty common association, that is Nord VPN and Thunderbird. And with the big black Friday sales there should be plenty more people with the same situation. If you can give me any ideas about a solution, I would be most grateful. Thank you Bill Lowe

Won't connect to Host Server. The error notification window won't allow me to get back to the app to check settings. The only option given is "Try Again". I don't know why it all of a sudden won't connect, because my iPhone connects just fine

Thunderbird cannot setup Outlook mailbox after upgrade to Windows 11

clearing passwords from the credentials caches in TB and windows makes no difference. Changing the password for the Outlook mail account and verifying it makes no difference.

No problem with 14 Gmail account accounts

Outlook and Thunderbird are a buggy pair. They will waste hours of your time. Experts will tell you that you’re an idiot and it’s really simple. But they can’t describe how to simply start from scratch and add an Outlook account. They just assume it works naturally for everybody because it worked for them. Maybe it does work 60% of the time. Good luck plan to spend a frustrating evening and then think about something other than Microsoft and Mozilla.

Hi, I used Thunderbird on a portable computer in installing automatically my mailboxes without issue. Then the systems suggested me to upgrade to Windows 11. I did.

But since that time I can not more use Thunderbird because it cannot set up my mailboxes on outlook and a specific national operator.

Is there an issiue in usign Thunderbord under Windows 11 ?

Tks.