Thunderbird: форум сообщества

Can get(POP3), but can not send emails to a newly created personal outlook.com account.

the following error occurs when trying to send mail: Unable to authenticate to Outgoing server (SMTP) . Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)

all my setting are correct per thunderbird and microsoft:

  (smtp-mail.outlook.com, port 587,  STARTTLS, OAUTH2, xxxxx@outlook.com)

thunderbird error log file contains the following: . . . mailnews.smtp: S: 535 5.7.139 Authentication unsuccessful, SmtpClientAuthentication is disabled for the Mailbox. Visit https://aka.ms/smtp_auth_disabled for more information. [CH5P220CA0005.NAMP220.PROD.OUTLOOK.COM 2026-02-28T23:29:21.878Z 08DE7703D4D1982A]

SmtpClient.sys.mjs:452:17 mailnews.smtp: Command failed: 535 Authentication unsuccessful, SmtpClientAuthentication is disabled for the Mailbox. Visit https://aka.ms/smtp_auth_disabled for more information. [CH5P220CA0005.NAMP220.PROD.OUTLOOK.COM 2026-02-28T23:29:21.878Z 08DE7703D4D1982A]; currentAction=_actionAUTH_XOAUTH2 SmtpClient.sys.mjs:578:19 mailnews.smtp: Error during AUTH XOAUTH2, sending empty response . . .

Based on my understanding its seems thunderbird is using SMTP AUTH instead of OAUTH2 as required for newer personal outlook.com accounts. Is my assessment correct? If so, is there a fix?

Last night Thunderbird deleted all my sent e mails. I had 7000 items in my sent mailbox. This morning they all were gone, except for things sent since 10:00 pm last night. Our server provider said they were deleted by Thunderbird.

Does anyone know why this happened and can they be recovered.?

We do a back up on an external drive. Can we go back two days and get them reloaded?

Is there a way to prevent this happening in the future?

I am using an old PC running Windows 7...yes, I know we are beyond support.

Thanks, Nancy

I am running Fedora 42 KDE spin ("plasma"). The "Discover Software Center" app offers Thunderbird as both a regular and a flatpak install, and I somewhat arbitrarily chose flatpak.

I am dealing with several legacy email accounts that have 20 years of messages, so I need to control where the profile was created, so immediately after installing I ran with -P to create a profile and specified a path name of /lore/jeff/thunderbird. /lore is the mountpoint of /dev/sda2 and it is in my /etc/fstab. /lore/jeff previously existed because that's where I put my Dropbox folder.

Every time I shut down TB and restart it later it always fails because lock and .parentlock are never deleted. Until now, I just dealt with it by deleting the files in bash, but today I wanted to make sure that TB always starts offline and decided that user.js would be the absolute safest way to guarantee that, so I pulled up profiles.ini to get a list of all profile paths to make sure that I put a copy of user.js in each and every one whether it's in use or not. What I discovered is that the profile I created does NOT have a Path of /lore/jeff/thunderbird but instead /run/user/1000/doc/e1a4ab74/thunderbird and not only that but at the very bottom of the file are these three lines [InstallBD520B11F73A6B64] Default=/run/user/1000/doc/e1a4ab74/thunderbird Locked=1

The interesting thing is that when I put user.js into the /run/user... path and then looked at /lore/jeff/thunderbird to check on lock and .parentlock, I see that there is magically a copy of user.js there. I'm not exactly sure what is going on because when I do `ls -ldi` on the two files, their inode numbers are vastly different. I don't know enough about how flatpak operates internally, but my gut tells me it has something to do with it, and my question that I'm finally getting around to asking is if I edit the profiles.ini file to use /lore/jeff/thunderbird in an attempt to get TB to correctly clean up the lock files, is that going to cause a problem because of whatever flatpak is doing? And should I complain to flatpak about it?

Thanks for reading :-)

thunderbird is not sending or receiving email to a particular legitimate email address; never had this problem in the past--it's just one particular email--please stop blocking it; @inreach.garmin.com

I set up a new account last week and need instructions on how to navigate and use this forum. I cannot find the question I posted. I got no email saying it was answered. I also need information about these codes I keep getting in my inbox after I've already logged in. I don't know what to do with them. I'm a newbie and need an instruction pdf if there is one. Thanks.

i used to use CCLeaner browser, but I have changed my default browser to Chrome. However, when I click on a link in an email in Thunderbird, it still sends me to CCleaner browser. I can "copy link address" and paste it into Chrome, but it would be more convenient for me to be able to click on the link and go to Chrome directly. Where in Thunderbird can I change this?

Voilà le message d'erreur quand je veux envoyer un mail ou transferer un mail L’envoi du message a échoué. Une erreur est survenue lors de l’envoi de l’e-mail. Le serveur a répondu : DfERwzp30T90v Mail rejete. Identifiant et adresse mail appartiennent a 2 utilisateurs differents. OFR203_528 [528]. Veuillez vérifier le message et essayer à nouveau. C'est récurrent et l 'adresse n' appartient pas 2 utilisateurs différents Je suis obligée d 'envoyer de mon portable où je n'ai pas de soucis Cordialement

some time ago I configured by thunderbird account to announce "You have mail" and it worked reliably until frontier moved email support to yahoo. Since then I get the "you have mail" announcement for a low percentage of new mail messages received. I contacted yahoo mail support and they responded that this is a problem with thunderbird and has nothing to do with yahoo. I suspect it's a matter of which process "sees" the new message first - thunderbird of yahoo mail. I've tried not having a yahoo mail window active, but that makes no difference. Most of the time now I get only a "gong" sound when a new mail message is received rather than "You have mail" voice notification.

Whenever I try to search my various emails for some text, at least 40% of the time it shows me the attached message. I'm on Version 149.0.1 but it's been happening ever since I installed Thunderbird (maybe 4 or 5 months ago?) My first move is to check that I haven't mis-spelled the word I'm looking for (which I usually haven't) and I definitely know that the word is valid for one or more emails. So why does this message keep appearing?

Previously I'd been running an old 32-bit version of Thunderbird (which I don't have installed any more) but I don't remember ever seeing this with the older version.

I was trying to get an email to come back at a future date and I right clicked on the email and clicked on "tag" and entered a date. Then T-Bird suddenly eliminated all the dark printing on unread messages. Is tat reversible? I need to go back to many previously unread message, but they are no longer clearly marked.

will not download -- "Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox"

I would like to have a text label on or in place of the Get Messages icon in the tree header.

I found this suggested procedure: 1. Right-click on Toolbar 2. Select "Customize" 3. Select desired choice in "Button Style" 4. Select "Get Messages" 5. Click on Save

Nothing happens!

I asked this in alt.comp/software.thunderbird and received several conflicting replies, none of which resolved the issue.