Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

I cant send emails with Thunderbird anymore ?

Loren's Phone
Loren's Phone
more options

Message the comes back to me ?

Delivery has failed to these recipients or groups:

Ririe, Morgan ([edited email from public] @yahoo.com) 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.

Delivery has failed to these recipients or groups:

Ririe, Morgan ([edited] @yahoo.com) 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 returned e-mail I get ---

Diagnostic information for administrators:

Generating server: SN6PR02MB4783.namprd02.prod.outlook.com

[edited] @yahoo.com Remote Server returned '550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATA and receiving system does not support BDAT'

Original message headers:

ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; 

b=kUKYaxSewmk3a/FBcnHw1ApAFlBvNgYwqPOIPTcxA27N7QJ1sExK3cPlNM0qo2xfGE2nPKOwL4Pvn80b6ps7i7LMNaai6bHDBAeZFIs1YkFzzcn9zyR4+ZoI4qi6pIig8CY98KJCMGY3nX0BTys4xls0W9PE83hKVwQ9zRCHKgTcbK+WARQSABAWlGppaPx5LRlWwf52J8oqFcakYc5G3xjNIkHCxgrS/Im+0n2eVKWexbi0OQey/LD12ZzFn8oJqyOSSG5kxLsLOSKGJN5dLyEbU1JfcNfMYB4q4Pai1uk4FIYJDgiPbCdCFycxWn/AvJ55XHtgCLV/gwcxFFzXkw==

ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com;

Message the comes back to me ? Delivery has failed to these recipients or groups: Ririe, Morgan ([edited email from public] @yahoo.com) 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. Delivery has failed to these recipients or groups: Ririe, Morgan ([edited] @yahoo.com) 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 returned e-mail I get --- Diagnostic information for administrators: Generating server: SN6PR02MB4783.namprd02.prod.outlook.com [edited] @yahoo.com Remote Server returned '550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATA and receiving system does not support BDAT' Original message headers: ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=kUKYaxSewmk3a/FBcnHw1ApAFlBvNgYwqPOIPTcxA27N7QJ1sExK3cPlNM0qo2xfGE2nPKOwL4Pvn80b6ps7i7LMNaai6bHDBAeZFIs1YkFzzcn9zyR4+ZoI4qi6pIig8CY98KJCMGY3nX0BTys4xls0W9PE83hKVwQ9zRCHKgTcbK+WARQSABAWlGppaPx5LRlWwf52J8oqFcakYc5G3xjNIkHCxgrS/Im+0n2eVKWexbi0OQey/LD12ZzFn8oJqyOSSG5kxLsLOSKGJN5dLyEbU1JfcNfMYB4q4Pai1uk4FIYJDgiPbCdCFycxWn/AvJ55XHtgCLV/gwcxFFzXkw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com;

Modified by James

All Replies (1)

Googlethunderbird
Googlethunderbird
  • Top 25 Contributor
more options

Hello there Loren’s phone. We have read your message. We try to help you.

The e-mail that you are trying to send to your recipient. Is not being delivered inbox or better you had a bounce back with this message that you have send us.

The server that the recipients has does not accept your incoming mail. But regonise it and returns the message that in now in your inbox.


You did send it to a non-existent email address on the remote side. If issues like this are there.

Though it can be returned also by the recipient’s firewall (or when the incoming server is down), the great majority of errors 550 simply tell that the recipient email address doesn’t exist. You should contact the recipient otherwise and get the right address.


Also settings can and could be configured wrong.

Set mailnews.wraplength to 0 (zero) in Options/General/Config. editor to wrap plain text messages to the window width and then see how they look to recipients.

Check if your messages are getting to that inbox now ?

https://support.mozilla.org/nl/questions/1386086#answer-1527437

If this is a bug and cannot be solved. Try to reinstall a fresh new version of Thunderbird . And delete all duplicated or installed software from Thunderbird before you try to reinstall the new one.

Use a good antivirus.

https://support.mozilla.org/en-US/kb/cannot-send-messages


Greetings Firefox volunteer.

Modified by Googlethunderbird