On 5.10.2004, at 16:59, Mark E. Mallett wrote:
That's interesting-- I'd guess that email clients are not going to do the ">From" quoting unless they are reading/writing directly to the mbox themselves, and not when accessing IMAP/POP folders. This would mean that an email client would see a potentially incorrect message, and could corrupt an mbox by sending (for copy/append) a message with missing quoting. I would think that it would be the responsibility of the IMAP/POP server to maintain the mbox integrity (not to mention the correctness of the message). But I can see where it would be a pain, for sure.
Dovecot (and eg. mutt) uses Content-Length header to figure out how large the message body is, so clients can't mess anything by sending From-lines. Also Dovecot requires that From-line has correct syntax and valid timestamp or it's not treated as From-line.