Date: Wed, 12 Feb 2003 02:20:38 +0100 From: Brad Knowles <brad.knowles@skynet.be> To: Terry Lambert <tlambert2@mindspring.com> Cc: Brad Knowles <brad.knowles@skynet.be>, Rahul Siddharthan <rsidd@online.fr>, freebsd-chat@freebsd.org Subject: Re: Email push and pull (was Re: matthew dillon) Message-ID: <a05200f37ba6f50bfc705@[10.0.1.2]> In-Reply-To: <3E498175.295FC389@mindspring.com> References: <20030211032932.GA1253@papagena.rockefeller.edu> <a05200f2bba6e8fc03a0f@[10.0.1.2]> <3E498175.295FC389@mindspring.com>
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At 3:04 PM -0800 2003/02/11, Terry Lambert wrote: > 2) Messages are stored once, instead of messages being > stored multiple times. This would be useful, for > example, for an mail server where a large attachment is > sent to multiple recipients, such that the recipients > were not all listed on a single message instance (if > they were a single instance, the server could coelesce > them anyway, and store only a single copy). In practice, as we scale up the system, this really isn't that useful. See <http://www.shub-internet.org/brad/papers/dihses/lisa2000/sld086.htm>; and <http://www.shub-internet.org/brad/papers/dihses/lisa2000/sld087.htm>. Moreover, do you know how painful it is to lose a cc:Mail, Lotus Notes, Microsoft Mail, or Microsoft Exchange database? You can instantly toast all mail for all users on that post office. Of course, you can only support about ~150 users per post office, but then you have to manage a great many more post offices and your TCO goes way, way up. How else do you think that Oracle can pitch their "Make Exchange Unbreakable" solution, where as damn bloody expensive as the hardware is that they base their solution on, the freakin' Oracle software licenses are actually more expensive, and yet still make the sale? They do it on TCO, and they do actually get the sales.... -- Brad Knowles, <brad.knowles@skynet.be> "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." -Benjamin Franklin, Historical Review of Pennsylvania. GCS/IT d+(-) s:+(++)>: a C++(+++)$ UMBSHI++++$ P+>++ L+ !E-(---) W+++(--) N+ !w--- O- M++ V PS++(+++) PE- Y+(++) PGP>+++ t+(+++) 5++(+++) X++(+++) R+(+++) tv+(+++) b+(++++) DI+(++++) D+(++) G+(++++) e++>++++ h--- r---(+++)* z(+++) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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