System.Net.Mail.SmtpClient / MailMessage Does Not Implement RFC2822 (2.1.1. Line Length Limits)

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System.Net.Mail.SmtpClient / MailMessage Does Not Implement RFC2822 (2.1.1. Line Length Limits) by Reltec

Active

Type:	Bug
ID:	491299
Opened:	9/22/2009 9:17:03 AM
Access Restriction:	Public

Workaround(s)

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User(s) can reproduce this bug

MailMessage.Subject is not splitted with the following rule:
There are two limits that this standard places on the number of
characters in a line. Each line of characters MUST be no more than
998 characters, and SHOULD be no more than 78 characters, excluding
the CRLF.

Details (expand)

Windows Networking Other

Create message with the subject (for example):
"абвгдежзикабвгдежзикабвгдежзикабвгдежзикабвгдежзикабвгдежзикабвгдежзикабвгдежзикабвгдежзикабвгдежзик"
It is encoded as a single line and therefore some participants are not able to decode it properly.
For example exchange + outlook results in displaying something similar in the subject field:
"?koi8-r?B?UkU6IO/H0sHOyd7FzsnRIM7BIOTMyc7VIPDPzNEgU....."

Windows XP

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Posted by Tratcher on 10/12/2009 at 4:14 PM

This has been addressed in .NET 4.0 Beta 2. Thank you for the feedback.