Todos os produtos Community Forum

My email works well most of the time. About three or four times a day now I get a message "The current command did not succeed. The mail server for account <account name> responded: System Error (Failure)." Nothing seems obviously wrong that I can see, maybe some of my recipients aren't getting the emails I send? The account in question is at gmail. I've been using it, and Thunderbird, for many years without seeing this error. It seems to have popped up in the last month or two and is now happening a few times a day. I'm running Windows 11 Pro 25H2 build 26200.9168, Thunderbird 153.0.3 Build ID 20260810194242. I have plenty of disk space (1.15TB free) and restarting my system hasn't helped. Is there a way to turn on more logging to get more information about these errors?

After your upgrade I was unable to send messages. The incoming I was able to fix but the outgoing I could not fix. I have included the email message sent to me and I have included a picture of the outgoing STMP,

Mail.com (and all its vanity domains like usa.com, europe.com, myself.com, etc.) & many such domains no longer work in Thunderbird. They used to

You upgraded my program just shortly and now I cannot send email. Everything worked fine before the upgrade but now I can only receive emails. Please help and tell me what to do.

How can I see my emails , they haven’t come through since 13/08/2024 and I really need it. It’s a recovery email address that I need desperately. Other thunderbird accounts are ok.

It still sends emails fine

Today all my yahoo & aol accounts were locked (About 10) . I had to release all 10 of them before Thunderbird can receive emails on accounts that are not locked (other than hotmail , gmail etc). I am reasonably sure this is not a yahoo / aol issue (though I know they are owned by same company Verizon Media )

Because I have seen this problem in the past with other email domains . If hotmail or gmail is locked then I cannot receive any yahoo emails until I release all locks on hotmail or gmail etc accounts

I read somewhere it may be auth issue such as OAuth2 but all my my settings are correct to OAuth2

After updating to 153.0.1esr(aarch64). the SEND button has disappeared. There's no way to send an email. (I can receive emails.) I am a Mac mini M2 Pro. OS 26.4.1

I cannot find a link to download a previous release of Thuderbird, which was working fine until this update.

This is the message I get when I try to send a message. Sending of the message failed. An error occurred while sending mail. The mail server responded: <budguinn@charter.net> sender rejected. Please verify that your email address is correct in your account settings and try again.

I have included a screen shot of my server settings.

With the new meadow update when either replying to a message or selecting new message there is no command menu bar to send save as draft etc.... tried several of the commands an setting changes but nothing seems to work - can do cntrl+enter to send and that s about it....

all INBOX emails disappeared from one of my email accounts. The other is working fine. Emails that were still open in one of the tabs are also now just an empty tab. --no luck repairing folder or deleting INBOX.msf. If I go to the Charter/Spectrum website the emails are still showing What should I try next?

Windows 11 Sending, but not receiving e-mails in two OAuth addresses (one university account, one personalised domain gmail) Can't find 'Incoming Server Settings' to check if they are correct Have selected "manual configuration flow" and restarted Thunderbird

Hi, I just installed Thunderbird on a new computer and was super happy about how easy the setup has become for multiple e-mail addresses - however, I have two addresses where I can send, but not recieve e-mails. One is a university e-mail and one a personalised domain gmail - I used both without trouble in Thunderbird on my previous computer. They are both OAuth and the Outgoing Server Settings are correct, but I cannot find where to adjust Incoming Server settings. I've selected "manual configuration flow" and restarted Thunderbird, but still can't see anything new. Where do I find Incoming Server settings now? Thank you for your help,

Lena

I'm using Thunderbird android app for the first time, and configured my mailbox.org account. Incoming mail appears just fine. I've confirmed my outgoing server settings and I get the message 'Outgoing server settings verified'. But when I try to send a message it just stays in my Outbox. I've tried tapping 'Send message' on the Outbox screen but nothing happens. Any ideas?

THUNDERBIRD 154 - IMAP MESSAGE LIST EMPTY AGAINST MERAK MAIL SERVER 8.5.0

=============================================================

SUMMARY Account sets up successfully. Folder tree enumerates. Message counts and unread counts are correct (folders render bold for unread). No messages are ever displayed in the message list pane, in any folder, regardless of size.

ENVIRONMENT

 Client : Thunderbird 154.0, Windows 10 Enterprise 22H2 (19045)
 Server : Merak Mail Server 8.5.0 (2006), IMAP 143 STARTTLS
 Auth   : CRAM-MD5

SERVER CAPABILITY STRING

 IMAP4rev1 AUTH=CRAM-MD5 AUTH=DIGEST-MD5 AUTH=LOGIN AUTH=PLAIN SORT
 THREAD=ORDEREDSUBJECT UIDPLUS QUOTA ACL NAMESPACE CHILDREN IDLE
 UNSELECT STARTTLS

 Note: no CONDSTORE, LIST-EXTENDED, ESEARCH, MOVE, LITERAL+, SPECIAL-USE.

REPRODUCTION

 1. Add IMAP account (autoconfig finds 143/STARTTLS correctly).
 2. Wait for folder discovery to complete.
 3. Click any folder. Message list pane is empty.

OBSERVED

 - Empty on every folder, including a 7-message folder and a 19-message
   folder, so this is not a volume or indexing-time issue.
 - Reproducible on a brand new profile with only this account configured.
 - All folders confirmed subscribed via Subscribe dialog.
 - Error Console (Ctrl+Shift+J) shows nothing when a folder is clicked.
 - "Run search on server" + Search returns nothing, AND no SEARCH command
   ever reaches the server (confirmed in server log). The request is never
   put on the wire.
 - Setting mailnews.imap.jsmodule=false has no effect.

CONTROL - SERVER IS HEALTHY

 The exact command Thunderbird issues works correctly from curl on the
 same machine, same credentials, same account:

   curl.exe -v -u stem --url "imap://<server>/INBOX" \
            --request "UID FETCH 1:* (FLAGS)"

 Returns all 2932 messages with UIDs and flags. SELECT INBOX reports:
   * 2932 EXISTS
   * OK [UIDVALIDITY 1435733459]
   * OK [UIDNEXT 45598]

 Bounded FETCH (FETCH 1:5 (FLAGS)) also returns correctly.

CONTROL - CLIENT IS OTHERWISE HEALTHY

 CardDAV and CalDAV from the same Thunderbird install to a Nextcloud
 server work correctly - address book and calendars sync fine.
 Outlook (with the same mailbox) reads this server without issue.

LOGGING NOTE

 MOZ_LOG=IMAP:5 produces no log file at all in 154 (tried via batch file,
 as administrator, with Thunderbird fully exited, log path outside any
 redirected folder). The MozillaWiki instructions for IMAP logging appear
 to be out of date.

SERVER-SIDE LOG

 Below: sessions for user "stem" only. Other users on this server have
 been removed, all SASL credential blobs redacted, duplicate sessions
 dropped, sorted by time.

IMAP server-side log - sessions for user "stem" only Server: Merak Mail Server 8.5.0 (2006) Other users and all SASL credential blobs removed.

==========================================================

192.168.191.2 [26EC] 15:33:19 Connected 192.168.191.2 [26EC] 15:33:19 >>> * OK ABC CBA IMAP4rev1 Mon, 24 Aug 2026 15:33:19 -0600 192.168.191.2 [26EC] 15:33:19 <<< 19 capability 192.168.191.2 [26EC] 15:33:19 <<< 20 authenticate CRAM-MD5 192.168.191.2 [26EC] 15:33:19 >>> + [REDACTED-SASL] 192.168.191.2 [26EC] 15:33:19 <<< [REDACTED-SASL user=stem] 192.168.191.2 [26EC] 15:33:19 >>> 20 OK AUTHENTICATE Completed 192.168.191.2 [26EC] 15:33:19 <<< 21 capability 192.168.191.2 [26EC] 15:33:19 <<< 22 select "INBOX" 192.168.191.2 [26EC] 15:33:19 <<< 23 getquotaroot "INBOX" 192.168.191.2 [26EC] 15:33:19 >>> 23 OK GETQUOTAROOT Completed 192.168.191.2 [26EC] 15:33:19 <<< 24 UID fetch 1:* (FLAGS) 192.168.191.2 [26EC] 15:33:19 >>> 24 OK UID FETCH Completed 192.168.191.2 [26EC] 15:33:19 <<< 25 logout 192.168.191.2 [26EC] 15:33:19 >>> * BYE IMAP4rev1 Server terminating connection SYSTEM [26EC] 15:33:19 Disconnected

174.90.223.162 [26EC] 15:33:24 Connected 174.90.223.162 [26EC] 15:33:24 >>> * OK ABC CBA IMAP4rev1 Mon, 24 Aug 2026 15:33:24 -0600 174.90.223.162 [26EC] 15:33:24 <<< EF1 CAPABILITY 174.90.223.162 [26EC] 15:33:24 <<< EF2 STARTTLS 174.90.223.162 [26EC] 15:33:24 >>> EF2 OK STARTTLS Ready to start TLS 174.90.223.162 [26EC] 15:33:24 <<< EF3 CAPABILITY 174.90.223.162 [26EC] 15:33:24 <<< EF4 AUTHENTICATE CRAM-MD5 174.90.223.162 [26EC] 15:33:24 >>> + [REDACTED-SASL] 174.90.223.162 [26EC] 15:33:24 <<< [REDACTED-SASL user=stem] 174.90.223.162 [26EC] 15:33:24 >>> EF4 OK AUTHENTICATE Completed 174.90.223.162 [26EC] 15:33:24 <<< EF5 CAPABILITY 174.90.223.162 [26EC] 15:33:24 <<< EF6 NAMESPACE 174.90.223.162 [26EC] 15:33:24 <<< EF7 LIST "" "*" SYSTEM [26EC] 15:33:24 Disconnected

174.90.223.4 [26EC] 15:39:23 Connected 174.90.223.4 [26EC] 15:39:23 >>> * OK ABC CBA IMAP4rev1 Mon, 24 Aug 2026 15:39:23 -0600 174.90.223.4 [26EC] 15:39:23 <<< HR1 CAPABILITY 174.90.223.4 [26EC] 15:39:23 <<< HR2 STARTTLS 174.90.223.4 [26EC] 15:39:23 >>> HR2 OK STARTTLS Ready to start TLS 174.90.223.4 [26EC] 15:39:23 <<< HR3 CAPABILITY 174.90.223.4 [26EC] 15:39:23 <<< HR4 AUTHENTICATE CRAM-MD5 174.90.223.4 [26EC] 15:39:23 >>> + [REDACTED-SASL] 174.90.223.4 [26EC] 15:39:23 <<< [REDACTED-SASL user=stem] 174.90.223.4 [26EC] 15:39:23 >>> HR4 OK AUTHENTICATE Completed 174.90.223.4 [26EC] 15:39:23 <<< HR5 CAPABILITY 174.90.223.4 [26EC] 15:39:23 <<< HR6 NAMESPACE 174.90.223.4 [26EC] 15:39:23 <<< HR7 LIST "" "*" SYSTEM [26EC] 15:39:23 Disconnected

All of a sudden I'm not getting any emails in any of my accounts. I had to delete one of my accounts to change the password because of issues with the provider. The re-added account had about 500+ emails in it and now it shows no emails at all. Also, sending messages has slowed way way down or refused to send.