Thunderbird supportforum

I always use Mozilla Thunderbird for email. Today, it would not send outgoing email. Any email gives me a failed message: "Sending of the message failed. An error occurred while sending mail. The mail server responded: Spam detected by content scanner. Message rejected (ID 665754780026FB52). Please check the message and try again."

My ISP insists the problem is not with their server, and I need to have Mozilla correct it.

I have an issue trying to configure a secondary email account, for a non-profit I do some work for. It was ok in the past, though I recall was tricky to set up on TB a couple of years ago. But now it has ceased to function after I migrated TB profile (successfully apart from this issue) no matter what I try. I’d be grateful for any suggestions. As is the case with many non-profits, there’s little tech support, but others can use the email account ok. I think it may be a TB issue as I have been able to set up the account ok with MS new Windows Outlook app (lame, but better than Mail…low bar). I’d rather have this account on my TB client along with the others I use. And the issue is replicated on two of my PCs. TB account set up reports “can’t detect settings from host server”. I found a support thread link text, which says “The failure to detect settings is rather common where hosted domains are concerned. Mostly because everything is done to a price and most of the things around encryption are done in a halfhearted manner. As is the server setups for mail. However by faithfully copying the settings from the provider as to domains server name and ports it should work.” So I did manual configuration – copied the settings from the successful Outlook set up, but no dice – all I get is server time out message. Settings are: IMAP server: mail.XXXX.org.uk Port 993 Security SSL/TLS [earlier working settings were STARTTLS port 143] SMTP server: mail.XXXX.org.uk Port 465 Security SSL/TLS [[earlier working settings were STARTTLS port 587] And using Normal Password for both; I tried Autodetect too but no good. I’ve see a suggestion that turning off the firewall (Norton) might work, but I’m reluctant to do that and doesn’t seem to make sense that would cause the issue. I found another suggestion that apparently works for some people - leaving password blank on setup. https://support.mozilla.org/en-US/questions/1399690. Before I try, are there any other suggestions or ideas? Trivial matter in the long run, but bugging me. Thanks

Hi,

I am facing an issue with Thunderbird.

I integrated my email address but there problem is the new message is giving "Undelivered Mail Returned to Sender" but I can reply and receive the emails.

Please guide me about it.

Many Thanks

One of my two gmail accouns has suddenly become impossible to access (cannot receive, cannot send). T'Bird produces an Authentication has Failed notification, after a Google Window headed "Sign in to Mozilla Thunderbird Email" which refuses to go away. Clicking on the 'help' or 'privacy' options in that google window produces no more than a blank window but then "Sign in to Mozilla Thunderbird Email" reappears a few minutes later. My other gmail account doesn't have this problem, so I assume it's not gmail but it's T'Bird.

What's going on?

(BTW signing into this Support resulted in an email "New sign-in to Mozilla Support" warning "New sign-in to Mozilla Support to Firefox on Windows 10". Trouble is, I'm on Windows 11. Trivial maybe, but telling maybe.)

Thunderbird 115.11.0 (64-bit) Edition Windows 11 Home Version 23H2 Installed on ‎10/‎22/‎2022 OS build 22631.3593 Experience Windows Feature Experience Pack 1000.22700.1003.0

Processor 12th Gen Intel(R) Core(TM) i7-1260P 2.10 GHz Installed RAM 16.0 GB (15.7 GB usable) Device ID 5E92FCAE-C72A-4252-8BD4-D8E95E052268 Product ID 00342-22036-83915-AAOEM System type 64-bit operating system, x64-based processor Pen and touch Touch support with 10 touch points

Thunderbird refuses to connect to Gmail with password. Fresh install of Thunderbird. New password (triple verified I'm using the same password) OAuth2 enabled Gmail account entered correctly, Thunderbird contacts Gmail, secondary authentication text sent and verified, refuses to connect.

Outlook Office 365 - works gmail.com - works Thunderbird - "Unable to log in at server. Probably wrong configuration, username or password"

Incoming IMAP SSL/TLS imap.gmail.com

Outgoing SMTP SSL/TLS smtp.gmail.com

ALERT ! wish to report an avalanche of emails from godaddy that are overwhelming my email box Tons of email under different names are coming from @registry.godaddy every day, the Junk filter is bypassed. A robot must be sending these one-liners using the flood volume as an attack. HELP!

Hello, I have problems signing in Thunderbird, it asks me for a password and though I am sure I enter the correct one it does not give me access and there is no way to put a new password also so how I am supposed to use Thunderbird again. I can do that with roundcube but Thunderbird does not give me access and to be honest I am a bit frustrated.

I have the most recent updated Thunderbird, I wish to delete a email account, however under settings Account Actions is absent. I have tried searching for and answer but no way to remove it so far. I have used Thunderbird for near 10 years and usually there is the Account Actions menu item. I see all settings its should be right under the item Return Receipts. But nothing is there.

Thank You for the help.

Hallo, durch eine Unachtsamkeit habe ich das Hauptpasswort (Primäres Passwort.) von Thunderbird gelöscht. Ich finde auf den Hilfeseiten keinen Hinweis wie man da Passwort zurücksetzten kann. Dadurch komme ich nicht mehr an meine Mails. Freundliche Grüße

I've lost my password to log into Thunderbird. There is no provision to change it, and it wasn't saved by Thunderbird password manager. There MUST be a way around this problem. Please help.

hello, i was using other emails platform em client then i saw your thunderbird which is pretty cool and awesome the only issue i found annoying so far is i don't receive any read receipt when i send an email even tho i have Return Receipt and delivery status notifications is on can you please help me to solve this issues thank you in advance sincerely yours

In Thunderbird I'm wondering why when I flag an email red as 'spam' (and delete it) it doesn't automatically block the email address from repeated future spam attempts?

Hello, I'm not very computer savvy so don't understand why this is happening or even what a blacklist is. I've attached screenshots. I tried to google what to do but don't understand the complicated things posted. Any help would be greatly appreciated.