Thunderbird Community Forum

We get a message on this email "Sending of the message failed. "An error occurred while sending mail. The mail server responded mfrm-502: Sender hickamh29@iinet.net.au blocked due to abuse. Please verify that your email address is correct in your account settings and try again."

Well we have tried everything, Help.

Hi recieved this email from Microsoft and wondering what to do....

How can you set up your Gmail, Apple Mail, or other third-party mail application?

Various non-Microsoft applications will have their own steps for connecting to your Outlook.com email account using modern authentication methods. See our help article - Modern Authentication Methods now needed to continue syncing Outlook Email in non-Microsoft email apps. However, you may need to contact the creators of those applications to provide you with instructions. In many cases, simply removing and re-adding your account with the latest version of that application will configure it to use modern authentication methods. '

Hello,

I'm encountering a problem with sending emails through Thunderbird. I'm receiving the following error message when trying to send emails to certain recipients: A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:

 amandasrwt09@gmail.com
   host smtp.antispamcloud.com [38.89.254.227]
   SMTP error from remote mail server after end of data:
   550 Your account has been locked. Please contact your administrator.
 larradh6600@gmail.com
   host smtp.antispamcloud.com [38.89.254.227]
   SMTP error from remote mail server after end of data:
   550 Your account has been locked. Please contact your administrator.

Reporting-MTA: dns; s1088.usc1.mysecurecloudhost.com

Action: failed Final-Recipient: rfc822;larradh6600@gmail.com Status: 5.0.0 Remote-MTA: dns; smtp.antispamcloud.com Diagnostic-Code: smtp; 550 Your account has been locked. Please contact your administrator.

Action: failed Final-Recipient: rfc822;amandasrwt09@gmail.com Status: 5.0.0 Remote-MTA: dns; smtp.antispamcloud.com Diagnostic-Code: smtp; 550 Your account has been locked. Please contact your administrator.

Could someone please help me understand why this is happening and how I can resolve it? It seems like the issue is related to the SMTP server or account settings, but I am unsure how to proceed.

Any assistance or guidance would be greatly appreciated.

Thank you!

Today while using the email got message to compact folder so i did and left it, after 30 min came back with a message that TB crashed, reopened it and found that i can see the emails subject but they don't open. Searched the form and tried the repair option but after it finished it deleted all the emails from 2018 till now and i can see the emails of 2017 only (the first year of usage) -i tried deleting the .msd file but didn't help

-Created new profile and copied the inbox folder to it but still can see old emails only.

-- i sent a test email from my mobile to my email and it received it but the emails on the server that was downloaded before the crash are not downloaded again - i did search on email address that iam sure that we communicated recently only and i could see all the emails in the search but when i try to open it its empty

I just built a new PC running Windows 11 for my Dad. When I set up his Xfinity email on Thunderbird, it opens up a browser window and asks him to log into Xfinity. After typing in the email address and clicking 'Let's go', it refreshes the page and asks for the email address again.

Sometimes, it advances and then asks for the password. The same thing happens where it just refreshes the page and asks for my password again, regardless of whether I type in the correct or incorrect password.

I have cleared the cache and cookies, restarted the computer, and reinstalled Thunderbird countless times.

Is there any way around this? He ran an older version of Thunderbird on his old PC with no issue.

...which was connecting fine previously. Apparently many people are having the same problem. Thunderbird finds the settings when creating account, but they do not work. Attached is a capture of the settings I found online, but these don't work either. A lot of email providers require you to allow third-party access on the email account itself, but I couldn't find a setting for this in mail.com.

This evening, Thunderbird has updated to the new version (can't see where the version number is held, unfortunately). Whenever I try to download new emails, I now get the message "Error with account [email address]. Sending of username did not succeed. Mail server pop3.iomartcloud.com responded: Mate, the command must be one of CAPA, USER, PASS or QUIT." Mails are still accessible through the mail client on my phone and through webmail, just not through Thunderbird.

My Thunderbird calendar file is located on my organization's Nextcloud server. We just changed to a newer version of Nextcloud and moved everything to a new url, so my calendar updates no longer work. I need to edit the address of the calendar file. I open the Edit Calendar and can see the old url in the Location field. I can select and copy the contents of the Location field but I can't change it.

See edited screenshot

Thanks in advance for your help.

Hello,

After upgrading the Thunderbird to the latest version (128.0.1esr (32-bit)), and trying to switch View->Layout->Classic View to Vertical View, and back to the Classic View, messages from last almost 15 months are not visible. Messages prior to 15 months ago are visible, and from that point, just couple of them showing totally unrelated content than nothing; looks like something is corrupted.

After the latest Thunderbird upgrade, one new message arrived and everything looks OK.

Any hint please?

Thanks. Branko

My Pop!OS Linux platform recently upgraded Thunderbird to version 128.0.1esr and in the process it lost access to my address book. Trying to get the address book back I encounter the attached prompt to choose the address book file format from a list.

I strongly suggest that somewhere in the process there is a "import previous address book after upgrade" or something like that. The reason is that I, like other busy users, do not know what file format is used by Thunderbird or for that matter where the address book resides. But hey, we're being asked by Thunderbird itself, shouldn't Thunderbird know these answers? Just have a choice "click to re-connect address book after Thunderbird upgrade" or something like that.

BTW I contribute financially to Thunderbird.

i have been noticing that some of my subfolders and their labels disappear. The still exist on the source (xfinity .com) but even after syncing they do not come back. If i change the name of the folder in the source and sync then the new folder shows up. Thi occurs under my main email folder not the local folders..

128.0.1esr (64-bit) Release notes This has just installed and after 20 YEARS - it has stopped working, I cannot send or receive mail. Using Mac Sonoma 14.5 Collecting mail via elyan2.merula.net My inbox is stuck with the update message, that i cannot delete, mark as read or anything else. Rebooted a number of times .

Help, any idea what I can do ?

Hi there,

I have Thunderbird on my laptop and map in to that three email accounts. One outlook and two plusnet.

On Wed 31st July this week when I did my daily look EVERYTHING for just one plusnet account has totally deleted. The shell of the email account is still present in the left hand pane, but no content at all. Nothing. All emails and folders and not in trash or anywhere. New emails are still coming in from that point.

On the plusnet online webmail portal they are also gone too.

The other two accounts are totally fine (including the other plusnet account).

I'm totally at a loss as to what happened. It was a totally normal day. I hope you can offer some insight. Thank you for your time. Neil

I installed email provider Mailfence as it was recommended by Thunderbird as a good free provider, only to find out that if used with Thunderbird it charged for the service. After the first year I have decided to cancel and have informed them that at the end of the term on 9th September I will not be renewing, and later on the same day i find i have no service with them. My contract which I paid for runs out on 9th September so i have another month to ensure all contacts are aware of the closure of the account. I feel Thunderbird needs to be aware of their deceit and if possible make them comply with their contractual obligations, and determine whether they are fit to be recommended.

The update put the email addresses in the column with the sender name. It's too cluttered to easily scan through now. Is there a way to put it back to only showing sender's name and not the email address?

If I need the email address, I'll get it from within the email itself, thanks!

I often face the problem that, while dragging/rearranging folders, I accidentally move a folder into another one. There is no confirm dialog, but the filter warning dialog opens and notifies me that filters are being updated.

Is there a way to abort the moving process at this stage? There is no cancel/abort button in the filter notification.

I have T-bird installed on my AIO & laptop, and it's my email app of choice for many years. However, this latest bug is troubling, but it is only showing wrong on my HP AIO. Both my HP laptop T-bird and MSOutlook email views show correctly. I recall a recent update on my AIO, so that may have been a factor.

What is wrong is that the AIO T-bird is giving the same "Correspondent" name, "Phil Ross" to all similar emails going back several weeks. Note that in the Bad email attachment view. Note in the "Correct labeling" attachment snipped from Outlook, that's the way it should look. Again, T-bird on my laptop is also continuing to show the correct labeling. (I don't recall it being updated like the AIO.)

That leads me to think the update may have been a factor.

Any help is appreciated.