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Receive the following error message whenever I attempt to reply to or forward an e-mail

"Send Message Error. Sending of the message failed. The message could not be sent because the connection to the Outdoing server (SMTP) mail.thorneplumbing.com timed out. Try again"

This has been going on for some time now, but does not happen when I use Thunderbird on my i-phone. Just on a PC. Please advise.

Thank you!

I get the error "connection to server pop-server.triad.rr.com was reset" when running Thunderbird and then I get no email.

Don't know if it is relevant but I did try VPN beta in Thunderbird some time before the above error happened.

Regards Tom

PS I can't get any email if you respond to me there.

Recently switched ISPs to a fiber internet company. After the switch, now whenever I try access my comcast email tunderbird gives me a message that my IP is temporarily blacklisted. I get two messages. One is a windows notification that says the blacklisted message, and then a popup message from tunderbird that it cannot log in. I have contacted my ISP to ask them what's up with the blacklist, but what's weird is that I can seem to access these accounts fine through Outlook, which would seem to indicate that there is some issue with tunderbird. I'd really rather use tunderbird than outlook. Can somebody help me with this?

The few articles I could find on this all suggest changing the IPv6 setting but I checked that and it is already set to what they suggest.

I tried deleting the account and recreating it in tunderbird, but it won't go through it says it can't log into the account.

i have a problem in the connection we need to have remote session

• Client : Mozilla Thunderbird (version utilisée) • Serveur SMTP : smtp-mail.outlook.com • Port : 587 • Sécurité : SSL/TLS • Authentification : OAuth2 • Message d’erreur exact indiquant un timeout / échec de connexion SMTP • Confirmation que : o le compte fonctionne en webmail o le service Microsoft est accessible o le problème persiste malgré un changement de réseau (si testé)

how do i delete or remove the message about could connect error

Contributor note: See also /questions/1576275 for the detailed error message.

when i open microzain website he give me these error

Server Not Found

Firefox can’t connect to the server at microzaib.com What can you do about it?

Try connecting on a different device. Check your modem or router. Disconnect and reconnect to Wi-Fi.

Hi, I use hushmail as an email provider, and thunderbird to download my hushmail emails onto my laptop. I recently changed the hushmail password, but I cannot see how to update it in thunderbird. I have read several help posts suggesting I need to change the password in 'saved logins', but I don't have any saved passwords there. I know the password is correct because I can access my emails with it online on the hushmail site, just not through thunderbird. I have attached pics showing that I don't have any saved logins, and the message I get when I try to download emails. Any help would be appreciated, thanks in advance.

This just started 4 or 5 days ago ( 2026.1.23 ish). I did not update TB nor make any changes to the account in question (that I'm aware of). The errors show up every few minutes, with a 'beep' sound and notification pop-up showing up each time - is very annoying.

I was running v145 when it started. I saw there was an update to 147 and installed that; same issue. I restarted TB into Troubleshooting mode and am still getting the error.

This is running on MacOS 15.7.3. Hardware is MacMini (2024) with Apple M4 chip.

Generally I still seem able to received & send emails.

I opened Activity Manager and Error Console. Error console doesn't seem to have much (using 'Multiprocess', with Errors, Warnings, Logs, Debug enabled). Activity manager shows things such as:

<my account name>

   Connection to server outlook.office365.com was interrupted.    09:49
   Failed to connect to server outlook.office365.com.    09:52
   Authentication failure while connecting to server outlook.office365.com.    09:58
   Authentication failure while connecting to server outlook.office365.com.    10:03
   Connection to server outlook.office365.com was interrupted.    10:10
   Connection to server outlook.office365.com was interrupted.    10:14
   Connection to server outlook.office365.com was interrupted.    10:20

There was an error or log entry that I was able to find a few days ago that made me think it was Calendar related, but now I'm not finding that message.

When I attempt to access the Add-Ons service through Thunderbird, it brings me to an HTML page (https://addons.thunderbird.net/en-US/thunderbird/search/?q=lastpass&appver=147.0.1&platform=Linux) reading

> addons.thunderbird.net > Performing security verification > > This website uses a security service to protect against malicious bots. This page is displayed while the > website verifies you are not a bot.

with the following footer: > Ray ID: 9d07fae58cabaefb > Performance and Security by Cloudflare

It will attempt to connect to Cloudflare to verify a Captcha, but the Captcha itself never renders, and after a period adds the following to the text:

> Why is this verification taking longer? >This verification can take longer due to an older computer or a slow internet connection. > What to do next: > # Wait briefly. Refreshing the page will restart the security verification and may take longer. > # If the verification still does not complete, refresh this page. > # If you are still stuck on this page after a page refresh, refer to Cloudflare’s troubleshooting documentation for more help.

After another period it then cycles the verification page. This continues as long as the tab remains open.

Opening the link listed above in Firefox opens the Addons page as expected.

Similar Captcha pages open on launch, as well as when accessing support or attempting to create a Matrix chat account.

There is a potentially related issue in that images and some icons are not rendered. I will make a separate post asking for help with that if it is not related, but it seemed relevant to mention.

The problem has existed for a long time, and I have checked existing responses without finding a solution, but I didn't get around to asking about it until now.

I am using Thunderbird v. 147.0.1 (64-bit) for Linux with no extensions installed), connected via AT&T broadband service with no proxy set, running under Manjaro 26.0, kernel 6.18.8-1, with the XFCE desktop environment (that last is only mentioned for the sake of completeness). I am using GUFW for my firewall, but the problem persists when the firewall is disabled (something I do not wish to do regularly in any case).

I've noticed that on using the app that it stalls. I have to toggle aeroplane mode to check to kickstart it back to life.

I can confirm it's not a phone or internet issue as I can switch out to chrome or share the stalling page to Chrome and it works immediately. This happens on different pages so it's not a page specific issue. I've even noticed it hanging on switching to a different app and then back, where the page suddenly stops functioning or loading.

I hate using chrome, I'd prefer to keep using Firefox, but I can't stand these constant pauses.

My device is a Xiaomi 15, I'm using the latest Firefox. I'm using the latest Android version. My Firefox app has only 1 extension installed ublock origin.

When trying to add my Outlook account, I am stuck at the authentication step. The webpage doesn't work. The screen recording I've attached is what happens on the second time and later; the first time it shows a different page (saying "The app named Thunderbird will be granted these permissions [... a list of permissions]; allow?" and I clicked "Allow") but it doesn't work either.

There is a "在 浏览器 浏览器中打开" option ("Open in browser browser" haha; it refers to Xiaomi system browser") but it opens a "Cannot find this page" error page. The "在 Edge 中运行" ("Run in Edge") button is unclickable.

Translation of the screen recording: Trying to log in to Thunderbird Android? Only continue if downloaded the app from trusted app store or website. [Cancel/Continue]

Screen recording at https://wwblo.lanzoub.com/itYge3mz8rlc (extract code: cnme)

Update: Something fixed itself, and it is currently working. Please close this thread for now.

Hi, Thunderbird updated this morning, and now I cannot access my email. I've rebooted, confirmed my server settings, and it has not fixed it.

I get a pop up message from Thunderbird stating the the connection to server pop.earthlink.net was reset. I have to reboot my PC to be able to download emails. Is there a setting I need to change? Thanks.

I HAVE CHANGED NOTHING & CAN LOG ON SERVER WHILE IN THUNDERBIRD SETTINGS, BUT WHEN ASKING FOR NEW MAIL AM TOLD "LOGIN TO SERVER WITH (MY EMAIL) FAILED". THIS IS SUDDEN SINCE UPDATING TO LATEST THUNDERBIRD. LOGGING ON IN FIREFOX WITH SAME INFO IS FINE! THANKS

All of a sudden I am finding that Firefox will not connect me to certain websites such as Walmart, Doordash and even Firefox itself. It looks like it's trying to but it just gets stuck. What's causing this and how do I fix it?