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Hello, can someone please fix this e-mail address please & thank you.

Following the instructions provided at this web page: https://developer.mozilla.org/en-US/docs/MDN/Community/Community_Participation_Guidelines I e-mailed a code of conduct violation report to the provided email address, mdn-cpg-report@mozilla.com

Actual results:

I immediately received the following e-mail reply, telling me in effect that my e-mail could not be delivered:

Subject: Delivery Status Notification (Failure) Date: Sun, 15 Feb 2026 21:34:30 -0800 (PST) From: Mail Delivery Subsystem <mailer-daemon@googlemail.com> To: [redacted]

Hello [redacted],

We're writing to let you know that the group you tried to contact (mdn-cpg-report) may not exist, or you may not have permission to post messages to the group. A few more details on why you weren't able to post:

You might have spelled or formatted the group name incorrectly. The owner of the group may have removed this group. You may need to join the group before receiving permission to post. This group may not be open to posting. If you have questions related to this or any other Google Group, visit the Help Center at https://support.google.com/a/mozilla.com/bin/topic.py?topic=25838.

Thanks,

mozilla.com admins

[headers, etc redacted]

Expected results:

I expected instead to receive a reply telling me that my e-mail had been successfully received.

When I send a message, it actually is sent, however the windows showing send progress continues on for some time, after which I need to click on cancel to close this window. At first I did not think the mail was being sent, however after replies on them were being received, and when sending an email from one of my email addresses to another, I get the windows message that the email was received. Why isn't the process window closing when the message was actually sent??

В первой половине дня не отправляются письма в thunderbird, во второй начинает работать. Проблема появилась 3 недели назад, причем по всем филиалам с разных IP адресов. При этом напрямую из браузера письма отправляются. P.S. в thunderbird входящие приходят. В чем может быть проблема? Во вложении скрины

Changed my BT mail password. I can receive mail but when trying to send I am asked to enter password which is not recognised. The SMTP server does not reccognise this. I have checked other questions and all seems well in my settings, i.e. changed stored passwords, but I must have missed something.Any advice most welcome Don

I have added a new outlook email account to thunderbird. I have checked and have the most recent update 147.0.1.(64 bit). It added the email, I can test connection to server and passes. When I try to get or send email I get either authenticated but not conected OR Command 12 error. I have IMap setting turned on in outlook and added thunderbird as an app.

I can't login to one of my email addresses. It says login to server with username failed. I tried all of the suggestions (using a pop server for example) and none of them seem to work. Please help.

Does TBird support plus addressing?

Scenario: I want to reply to email sent "To: markfilipak+joe@...". To do that successfully, in the "Write" dialog, I have to click on "From", scroll down to "Customize From Address...", click it, and add "+joe". (There is a menu alternative: "Options","Customize From Address...".)

If I forget to do that, then my reply does not have "+joe"; it goes out "From: markfilipak@...".

The Issue: When Joe replies to _that_ message, it does not have "+joe", so Joe's reply is trashed. (It's trashed because a filter I wrote automatically deletes messages that do not have "To: markfilipak+<something>@..." in the header.

The sensible way to handle plus addressing is for TBird to recognize plus addressing and to automatically make my "From" header from Joe's "To" header. That way, "+joe" will always be there.

Is there a way to do that?

Thanks Folks! -- Mark.

My email set-up is a mess. In December, when I had a problem, my provider told me to open a new account, which I did. Both my old and new accounts received emails for a few days, and then only the new account was receiving emails. Now I find that my drafts and sent messages are saved to the old account, and suddenly yesterday I was unable to send emails, from either account.

I keep getting this error message: "Sending of the message failed. Peer reports incompatible or unsupported protocol version.: The configuration related to mail.activ8.net.au must be corrected"

I have no idea what this means or how to correct it.

My husband and I use the same internet provider activ8 and access it through Thunderbird. I have a new computer. Received a configuration code from Activ8 and I can receive emails but not send them. Get the message PEER USING UNSUPPORTED VERSION OF SECURITY PROTOCOL. THE CONFIGURATION TO MAIL.ACTIV8.NET.AU MUST BE CORRECTED. How do I do that? Activ8 says they can't help.

Continuation of my prior post: https://support.mozilla.org/en-US/questions/1516342

Thunderbird has a routine problem with being unable to log into various mail servers. I have four accounts and they all seem to share this problem.

Most recent update: I've tested this in Windows Safe Mode, and the problem has not appeared. Since I can't do any useful work in Safe Mode, it's hard to give it a thorough test, but so far so good. Also, I have removed AVG antivirus because it was redundant. I have seen no improvement since it was removed.

Can this problem be resolved?

Hello, I have two microsoft email addresses linked to Thunderbird, one @hotmail.com and one @outlook.com. I have been using Thunderbird with them both fine for some time. Recently, the outlook.com account has stopped sending emails via Thunderbird. As far as I can tell, this was out of nowhere, and I hadn't changed any settings. It still receives emails.

Both accounts use the same SMTP information, and the hotmail.com continues to work with those details.

I have tried changing the settings and even deleting and readding the account but it hasn't fixed it. I have also checked the outlook account is still IMAP and POP enabled and it is.

When I do try and send an email, I am told: "Login to server smtp.office365.com with username [edited]@outlook.com failed. with options to Retry, Enter New Password (which loads a new window briefly but then disappears) and Cancel."

When I cancel, I get this message: "Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) smtp.office365.com timed out. Try again."

My server settings, on both accounts, are: smtp.office365.com Port 587 STARTTLS OAuth2 And the user name matches the email.

Does anyone know what I might be doing wrong, and how I could fix it? Thank you!