steve%cs.ucl.ac.uk@BRL.ARPA (Steve Kille) (07/22/86)
This was rejected by our domain server/mail system. Can't get thru to the correct NS at present, so its not clear where the error is. Steve ------- Forwarded Message To: jacob_palme_qz@qzcom cc: amigo_group@qzcom, header-people@ai.ai.mit.edu Subject: Distribution lists Phone: +44-1-387-7050 ext 226 Date: Mon, 21 Jul 86 15:52:48 +0000 Message-ID: <6445.522341568@UK.AC.UCL.CS> From: Steve Kille <steve@UK.AC.UCL.CS> Jacob, One comment on you paper, and one general point: 1) your proposed approach of encoding protocol in ASCII in the body of an IP Message seems like a bad move. WHy not define a new protocol over P1 with X.409 encodings? This would be much more robust (particularly for error conditions), and would be simpler to specify. It is also architecturally more sound. 2) A mechanism to prevent loops, which requires neither nasty additions to tracing info, nor the retention of history at the list expansion point is simply to enforce strict hierarchy by adminstrative procedures. An easy way to do this would be to assign a 'level' to any list, and to require that if any member of a list is itself a list, then the level of that list must be higher than the first list. The 'level' would simply be a property of the list in the DIrectory Service. I cannot see any type of useful use of lists which this mechanism would prevent. any thoughts? Steve ------- End of Forwarded Message