Email Sending Failure

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 clie… (read more)

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

Asked by karnup 4 days ago

Last reply by owjw 1 day ago

Out of nowhere, starting this morning, I am unable to send emails from Thunderbird

I have been using Thunderbird as my default email for years and have run into my share of issues. Out of nowhere, starting this morning, I am unable to send emails from T… (read more)

I have been using Thunderbird as my default email for years and have run into my share of issues. Out of nowhere, starting this morning, I am unable to send emails from Thunderbird at all. I spent about 2 hours on the phone with my service provider trying to figure it out. The unfortunate conclusion I have come to, is that unless you can fix this issue for me, I will be using Outlook going forward. Let me be clear, I HATE OUTLOOK! but I am running out of options other than to throw away the email address I have been using since about 1990.

This is the message I get when the email does not send. This particular one was to trs.ky.gov, but it doesn't matter who the recipient is, the only ones that don't get this message are those I send to myself.

Your message contains invalid characters (bare line feed characters) which the email servers at trs.ky.gov don't support. reb Office 365 julie.soard Action Required Recipient

Bare line feeds unsupported

How to Fix It It appears that your email program added invalid characters (bare line feed characters) into your message when you sent it. Try using a different email program to send your message. If the problem continues send this non-delivery report (NDR) message to your email admin for assistance.

Was this helpful? Send feedback to Microsoft.

More Info for Email Admins Status code: 550 5.6.11

This error occurs when the email program or device used to create or send an email message adds bare line feed characters into the message. When bare line feed characters are included in a message, the SMTP protocol chunking feature is required to transmit the message between email servers. Chunking uses the SMTP protocol BDAT command, but the recipient's email server doesn't support the BDAT command.

To fix the issue, the sender should send the message using an email program or device that doesn't add bare line feed characters to messages. Most modern email programs don't add bare line feed characters.

If the sender is using a device like a fax machine, printer, or scanner, it's likely an older model that doesn't support the SMTP protocol BDAT command. To fix this error, you'll need to replace the device with a newer model that supports the BDAT command. The industry standard recommendation to support SMTP chunking was published in 1998 so most devices manufactured during the last decade support this feature.

Another option is for the email admin at the recipient's domain to upgrade their email servers to servers that support the SMTP protocol BDAT command. Most modern email servers support BDAT; however, some free and older email servers don't support it.

For more information see Fix email delivery issues for error code 5.6.11 in Office 365.

Original Message Details Created Date: 8/2/2022 9:35:48 PM Sender Address: reb@isoc.net Recipient Address: julie.soard@trs.ky.gov Subject: Fwd: documents for retirement

Error Details Reported error: 550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATA and receiving system does not support BDAT DSN generated by: SN6PR08MB5327.namprd08.prod.outlook.com

Asked by reb28 1 week ago

Last reply by Tgill 5 days ago

Your message contains invalid characters (bare line feed characters) which the email servers at yahoo.com don't support.

Thunderbird 102.1.0 (32-bit) is suddenly giving me error messages but only to a few recipients. " Your message to rebeccaleahrogers@yahoo.com couldn't be delivered. You… (read more)

Thunderbird 102.1.0 (32-bit) is suddenly giving me error messages but only to a few recipients. " Your message to rebeccaleahrogers@yahoo.com couldn't be delivered. Your message contains invalid characters (bare line feed characters) which the email servers at yahoo.com don't support. dave Office 365 rebeccaleahrogers Action Required Recipient

Bare line feeds unsupported

How to Fix It It appears that your email program added invalid characters (bare line feed characters) into your message when you sent it. Try using a different email program to send your message. If the problem continues send this non-delivery report (NDR) message to your email admin for assistance.

Was this helpful? Send feedback to Microsoft.

More Info for Email Admins Status code: 550 5.6.11

This error occurs when the email program or device used to create or send an email message adds bare line feed characters into the message. When bare line feed characters are included in a message, the SMTP protocol chunking feature is required to transmit the message between email servers. Chunking uses the SMTP protocol BDAT command, but the recipient's email server doesn't support the BDAT command.

To fix the issue, the sender should send the message using an email program or device that doesn't add bare line feed characters to messages. Most modern email programs don't add bare line feed characters.

If the sender is using a device like a fax machine, printer, or scanner, it's likely an older model that doesn't support the SMTP protocol BDAT command. To fix this error, you'll need to replace the device with a newer model that supports the BDAT command. The industry standard recommendation to support SMTP chunking was published in 1998 so most devices manufactured during the last decade support this feature.

Another option is for the email admin at the recipient's domain to upgrade their email servers to servers that support the SMTP protocol BDAT command. Most modern email servers support BDAT; however, some free and older email servers don't support it."

I use GoDaddy.com as my ISP provider and they have ported all the accounts over to MS Outlook. It worked fine last week, and suddenly I'm getting this "Illegal characters" message. Any hints?

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Until this Ver. You could still bring back the "Choose What you want to do with the file" Window if You set the mentioned about:config setting to false (linked thread above).

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Sending of the message failed. An error occurred while sending mail. The mail server responded: stray newline detected. see http://cr.yp.to/docs/smtplf.html. Please check the message and try again.

I have not been able to fix the issue.

I can receive emails OK, but can't send as the above error reading stops the send

Hope you can assist in solving the problem. Note: fixing computer issues is somewhat of a challenge.

Respectfully,

R. E. Steele

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