I-Thunderbird Community Forum

How do I fix this Sending of message failed. An error occurred while sending mail. Th mail server responded Policy -MFRM53 Relay Denied-unauthoruzed. Please verify that your email address is correct in your account settings and try again What should I do

I upgraded my 2012 macbook pro to the latest version of thunderbird and I can not get my emails. I am running os10.15.8 Every time I try to get messages a yahoo page opens up and wants me to sign into my yahoo account. I can't get rid of the yahoo page it just keeps reopening again and again. Everything was working fine until I upgraded thunderbird to 153.0.3esr. My other mac that has not been upgraded can still get my emails.

Is it possible to go back to the prior versions of thunderbird or make this new version work with my mac?

Thunderbird version: 153.0.3 (64-bit), Meadow, release channel, fully up to date.

I can successfully insert my local PNG into a composed HTML email, tick “Attach this image to the message,” and add a hyperlink to the image. The hyperlink works when the email is sent.

The problem occurs when trying to use this permanently as the account signature. HTML signatures I've tried either lose the image, show a broken-image icon, or fail to preserve the clickable image when used automatically.

I have also tested an HTML signature using a local file:///C:/... image reference, which produces a broken-image icon in Thunderbird.

I do not want to host the image remotely. I want the PNG embedded in the HTML/signature and sent with each email.

Can you confirm the correct method specifically for Thunderbird 153.0.3 on Windows, and whether there is a current issue with embedded/Base64 images or clickable image signatures in this version?

Attached is a picture of what my account settings looks like. Thunderbird stopped syncing my emails from a gmail account. How do I get it to continue syncing my emails?

I've never had a problem before but suddenly I'm getting an error when I try to log into one of my accounts telling me "The STAT command did not succeed. Error getting message number and sizes. Mail server pop.gmail.com responded [AUTH] invalid credentials. Why is this happening now?

I have 4 other accounts on Thunderbird and this is the only one that has started giving me problems.

When i attempt to retrieve my email I get the following message at the top of my screen, "The certificate for POP3.pangia.biz expired of 8/13/26. How do I renew it? My email address is jahoagy@signalpeak.net. Thank you John Hoagland.

Hi, After recent Thunderbird update Shift + F5 nor Get new messages for all accounts IMAP doesn't work. I've synchronisation on. When I start Thunderbird it gets messages fine.

I have version 153.02esr. Since two days ago I cannot reply or forward messages. It pulls up the appropriate page but there is no box to send, the space is just blank in the upper left hand corner.

Sending of the message failed. An error occurred while sending mail. The mail server responded: <support+idMM51X2-RWD3K@dealerbuilt.zendesk.com>: Relay access denied. Please check the message recipient "support+idMM51X2-RWD3K@dealerbuilt.zendesk.com" and try again.

the above is the error code. I have triple checked emails, even tried sending a message to my personal email as a test and nothing.

I just downloaded and put into mirror 'local folders' all my 100 and more folders from yahoo going back 25 years. excellent. I believe they are safe and solid as a rock now? Simple question is how to get all ongoing emails into those folders?

I did all that with an add on called importexporttoolsng which is great but does not live on and monitor new arrivals.

I've been advised to set up an archive folder and put everything in there and i will if i must, of course. but ideally maintaining the current folder structure that yahoo is moving messages into is the best way.

can it be done?

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.

TB suddenly moves messages from inbox to trash automatically without any interaction. Search through the forrum shows that it has been asked for already, see https://support.mozilla.org/en-US/questions/1588804, similar postings can also be found with you search engine.

As described in other postings, the messages are moved from Inbox to trash. When moving them back manually from trash to inbox, they are moved to trash again immediately.

• it happens for the default account only,
• there're no filters at all in TB,
• junk detection is disabled,
• Settings->General Storage is all disabled,
• (account)->Settings->Server Settings has checked "move deleted messages to trash",
• (account)->Settings->Storage is all disabled,
• Inbox->Properties "Repair folder" does not help,
• Inbox->Properties "rules is set to "use account settings" (and greyd out "do not delete messages"),
• exactly same behaviour when starting TB in save mode,
• manually deleting all *.msf files (for inbox) does not help,
• manually deleting xulstore.json does not help,

Additional notes, which are not related to the problem, IMHO:

• IMAP on port 993,
• no other clients anywhere are connected to that account,
• TB configured for more than 10 accounts, more than 500 folders and sub-folders,
• host with > 16GB RAM, TB uses 3GB virt,
• problem observerd in older TB also, at least 13x.x

I'd be happy to debug/trace the problem if someone can give me detailled insructions how to start TB with debugging. Please feel free to ask for about:config settings as they are non-ambiguous and language independent ;-)

Thanks.