Re: 421 4.3.0 deliver: Trying to unput wrong character
Joseph Brennan <[email protected]>
| Newsgroups | gmane.mail.imap.cyrus |
|---|---|
| Message-ID | <CAMSGcLCcpEd4oDLJzWuQAsSYZhqsuGiNWpC8Fc4=Guvm3sdxUA@mail.gmail.com> |
> This is one of those weird inconsistencies between IMAP and SMTP protocols … > as far as I remember, the NUL character restriction only applies to the IMAP > protocol … so your MTA (e.g. sendmail) is not breaking the SMTP RFC by > transferring them. True, but it's breaking the Internet Message Format RFC, namely RFC 2822. Under "Obsolete Syntax" includes this: Finally, certain characters that were formerly allowed in messages appear in this section. The NUL character (ASCII value 0) was once allowed, but is no longer for compatibility reasons. Compatibility with POP and IMAP, presumably. Sendmail seems to be following still the old "be generous in what you accept" maxim, and as a result it accepts something that modern software cannot read-- just in case you have some odd way of reading mail that can handle it. -- Joseph Brennan Columbia University ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus