From: Jose M. M. da C. <Jos...@en...> - 2004-07-27 20:38:21
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Murray S. Kucherawy wrote: >On Tue, 27 Jul 2004, SM wrote: > ... >>If there is a standard for the order in which the headers are signed, then >>the verifying end already knows in which order to use the headers. >> I don't know about a standard on this. But when you read what other people say in other groups (ASRG, e.g.), sometimes you may think that there are many people thinking that the best way to add new headers to a message is at beginning. If necessary, for the user confort, MUAs may reorder them before visually present them to the user. > > > >>I forgot to mention the case where there a header occurs more than once. >>The sending side should consider the message as incorrectly formatted. >>On the receiving side, it should be considered as incorrectly formatted >>too if the "error" is detected at that end. The aim is to avoid fixing >>broken stuff. We don't know which From: header the MUA will display if >>there are more than one. >> RFC 2822 says there shall be ONE and ONLY ONE - not ZERO - From headers. So, messages without From or with multiple From headers don't conform to RFC 2822. That's the same for "To", "Date" and some other headers... -- --------------------------------------------------------------- Jose Marcio MARTINS DA CRUZ Tel. :(33) 01.40.51.93.41 Ecole des Mines de Paris http://j-chkmail.ensmp.fr 60, bd Saint Michel http://www.ensmp.fr/~martins 75272 - PARIS CEDEX 06 mailto:Jos...@en... |