🚀 go-pugleaf

Edward Murphy writes
| 
| i haven't been able to find much knowledge regarding the construction of  
| nextmail headers. specifically, what mechanism (field header, magic spell,  
| whatever) determined where a *read receipt* is returned to. anyone who has  
| any inkling and could drop me a note, i'd appreciate it.
| 
| pointers to where i might find it in the next documentation  
| (waaaaaahahahahahaa) would suffice, yea, even be preferred.
| 
| ed murphy
| grad slave from mars

No documentation, just something I noticed.  i.e. the line which says:

Received: by NeXT Mailer (1.63)

will be the following if a Read Receipt has been requested by the sender:

Received: by NeXT Mailer (1.63.RR)

Obviously, the actual mailer version number may be different, but the ".RR" is  
constant.  I search for the string ".RR)" on incoming mail and filter it to  
prevent receipts from being generated when I read the mail the first time.  I  
wouls assume that the mail is simply returned to the person or address listed  
in the header after From:, but I've never bothered to verify if that is always  
true.  I leave that test as an exercise for interested parties.
-- 
Brian Willoughby	Software Design Engineer, BSEE NCSU
BrianW@SoundS.WA.com	Sound Signal Processing Software and Consulting
NeXTmail welcome	- NO EMAIL SOLICITATION without prior permission