- #Barelinefeedsareillegal baseelements upgrade#
- #Barelinefeedsareillegal baseelements code#
- #Barelinefeedsareillegal baseelements free#
Protected MimePart CreateMimeAttachment(string attachmentFileName, byte binar圜ontent, DateTime cDate, DateTime mDate, DateTime rDate)
/ A leaf-node MIME part that contains an attachment.
/ Date and time that the specified file or directory was last access to. / Date and time that the specified file or directory was last written to / Creation date and time for the specified file or directory / The array of unsigned bytes from which to create the attachment stream. / Create an file attachment for the binary data
Then attachments are correctly encoded and the problem is gone. You need to add the bold marked line in the following code. The problem is the used MailKit NuGet package and the non conform usage of it. The line separator in an email message is supposed to be CRLF, not LF.After no one wants to help me, I have to help myself. What's a bare line feed?Ī bare line feed is a single line feed character (LF or ASCII 10) that isn't immediately preceded by the carriage return character (CR or ASCII 13).
#Barelinefeedsareillegal baseelements free#
Most modern email servers support BDAT however, some free and older email servers don't support BDAT.
#Barelinefeedsareillegal baseelements upgrade#
Solution 2: Upgrade the destination email server to a newer version (or different email server software) that supports the SMTP BDAT commandĮmail servers that supports the SMTP BDAT command can accept messages with bare line feeds. For more information, see Set-ReceiveConnector. If the recipient's email server is Exchange, the admin could configure the setting -BareLinefeedRejectionEnabled $false on the server's Receive connector for internet mail. For example, Receive connectors in Exchange Server support the BareLinefeedRejectionEnabled setting. Some email servers support the ability to disable bare line feed rejection. Solution 1: Disable bare line feed rejection (allow messages that contain bare line feeds) in the destination email server If the steps in the previous section didn't fix the problem, the recipient's email admin can fix the problem by using one solutions described in this section. If these steps don't fix the problem for you, contact your email admin and refer them to the information in this topic so they can try to resolve the issue for you. If the original message contained an attachment, try sending the message without the attachment. Send the message using a different email program that doesn't add bare line feeds to messages, such as Outlook on the web (formerly known as Outlook Web App). If you received this NDR as a result of a message that you sent, you can try the following steps fix the problem: In an effort to better support security standards (for example, DomainKeys Identified Mail or DKIM), Office 365 no longer removes bare line feeds from messages. Microsoft 365 and Office 365 used to remove bare line feeds from messages to enable delivery to older email servers that didn't support SMTP Chunking and the BDAT command. If the destination email server doesn't support BDAT, then it can't accept messages that contain bare line feeds. Chunking uses the SMTP BDAT command as defined in RFC 3030. If a message contains bare line feeds, the SMTP Chunking feature is required to transmit the message between email servers. Typically, each line in an email message ends with a carriage return followed by a line feed (CR LF). In other words, instead of a line of text ending with CR LF, it ends with only LF.
#Barelinefeedsareillegal baseelements code#
You received this bounce message with error code 5.6.11 because your message contain bare line feeds, and the destination email server doesn't support messages with bare line feeds.Ī bare line feed is a line feed (LF) character that's not immediately preceded by a carriage return (CR) character. This topic describes what you can do if you see error code 5.6.11 in a non-delivery report (also known as an NDR, bounce message, delivery status notification, or DSN). It's frustrating when you get an error after sending an email message.
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