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Email Sending Failure

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With just 2 email addresses that I have been using for years, I suddenly get this Undeliverable message when attempting to send emails using Thunderbird:

"The mail client submitted this message with bare line feeds, which cannot be sent via SMTP protocol DATA command and receiving system does not support BDAT"

I can receive emails from the 2 addresses fine, I just can't send to them through Thunderbird. When I sign in to Hotmail Outlook Live I can send and receive to these addresses with no problem.

I'm stumped! Any ideas? Can I reset Thunderbird?

Thanks

With just 2 email addresses that I have been using for years, I suddenly get this Undeliverable message when attempting to send emails using Thunderbird: "The mail client submitted this message with bare line feeds, which cannot be sent via SMTP protocol DATA command and receiving system does not support BDAT" I can receive emails from the 2 addresses fine, I just can't send to them through Thunderbird. When I sign in to Hotmail Outlook Live I can send and receive to these addresses with no problem. I'm stumped! Any ideas? Can I reset Thunderbird? Thanks

All Replies (4)

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Hi,

Which version of Thunderbird are you using ? Check if you can update it.

Thunderbird or an add-on is adding bare line feed to your message and the recipient server can't deal with it. Modern mail application remove it by default. That's why it's working from web application.

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Many thanks for your reply totti.

I have just updated to Thunderbird 102.1.2 but still have the problem.

The weird thing is that I can send the same 1 word email to 100 different addresses but it is always the same 2 addresses that are undeliverable. In the last 15 years I have never had a problem with these 2 emails so a bug has appeared in the system somehow. Is there any way of clearing or resetting it? Thanks

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I have the same problem.... i can also use webmail for outlook.com and it goes thru, so what is in theThunderbird client that i need to change???? This started a week ago.

The mail client submitted this message with bare line feeds, which cannot be sent via SMTP protocol DATA command and receiving system does not support BDAT.

Joan

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I have the same problem? This is the message I get:

Delivery has failed to these recipients or groups: [the email it couldn't send message to is shown here] The mail client submitted this message with bare line feeds, which cannot be sent via SMTP protocol DATA command and receiving system does not support BDAT.

The email I use to send the undeliverable messages is a '@hotmail.com' address. Any assistance on how to correct this would be greatly appreciated

Bernie

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