User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.5) Gecko/20031018 Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.5) Gecko/20031018 I just got a rfc2822 violating mail, i.e. split header with second line NOT starting with white-space-character and Mozilla(1.5, just built) failed to send a return receipt (my qmail MTA said: bare LF!). Then I started experimenting with different versions of the Disposition-Notification-To header and what I found is that if the header body is split in two lines (or more?), EVEN CORRECTLY (i.e. with white-space-char at the beginning), Mozilla cannot send a return receipt. Reproducible: Always Steps to Reproduce: 1. Send a mail with Disposition-Notification-To header body split into 2 lines (perhaps a veeeeery long From address, so it gets split) 2. Open it in Mozilla Mail. 3. Click ok to send the return receipt. Actual Results: If you have a good MTA (qmail), it will report back error. Otherwise undefined, but possibly a mail with bare LF will be send. Expected Results: Sendidng a RR should happen. For bare LFs, see: http://cr.yp.to/docs/smtplf.html The mail I've got was sent from: User-Agent: Mozilla/5.0 (Macintosh; U; PPC; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0 which is probably another bug to be filed. Mozilla 1.5 does not split the Disposition-Notification-To header into 2 lines, even when it is veeery long. An example: rfc correct, but not working header: Disposition-Notification-To: My mail <CRLF> <TAB>firstname.lastname@example.org
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