Date: Tue, 05 Nov 2002 08:40:53 -0700 From: EAZNet - Eddie Fry <eddie@eaznet.com> To: "Dave [Hawk-Systems]" <dave@hawk-systems.com>, "Tom Samplonius" <tom@sdf.com>, "Scott Gerhardt" <scott@g-it.ca> Cc: <nbari@unixmexico.com>, <freebsd-isp@FreeBSD.ORG> Subject: gateway mail server WAS qmail + 1 million users Message-ID: <5.1.1.6.0.20021105083935.03251d18@mail.eaznet.com> In-Reply-To: <DBEIKNMKGOBGNDHAAKGNOEDGDEAB.dave@hawk-systems.com> References: <Pine.BSF.4.05.10211050030410.5111-100000@misery.sdf.com>
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Dave, What are you using for gateway mail servers and SPAM filtering? I have been looking for a solution to this problem, but have not been satisfied. Thanks, Eddie At 09:14 AM 11/5/2002 -0500, Dave [Hawk-Systems] wrote: > >> Hmm, 1,000,000 users with 2MB quota each will require 2TB of disk space > >> minimum! You will need an external fiber channel or similar storage > array. > > > > It has been a long time since I've seen a mail server with enough > >storage to handle each mailbox at 100% capacity. Most people check their > >mail regularly, and have empty boxes. In fact, on one mail server I've > >seen, the total daily delivered volume of e-mail (7GB) exceeds the total > >free space (5GB), but yet it never fills up, as most of are checking their > >e-mail constantly, so the number of e-mails in and out is roughly the > >same. > >That said, the volume of users he is talking putting on two 73GB >drives... the >potential for running into storage problems is high. ON a smaller scale, we >have a server with 500 users, also using webmail interface (so some mail >retention factors on the server) with each user set at 100mb limit per >mailbox... all served off a 20gb partition for the maildirectories... >currently the storage requirement is around 350mb. Another server with >approximately 1300 users currently requires just under 1GB of storage. > >Alot will depend on HIS usage... a free or hotmail type service will >result in >a significant number of accounts that collect mail and are never emptied, thus >he better have the maildir on a seperate parittion that won't crash and burn >when he taps out the storage he has allocated to the maildirs. > >To the question though, the suggestions so far I am in agreement with... >throw >more ram at the swapfile problem, multiple smaller scsi disks will allow >faster >rw at raid1. If you are not wanting to totally overhaul the system, placing >your swap (and systems files) on seperate disks than your mail storage may >help >by reducing accesses to the same drive(s)... depends on your raid config. > >Definately look into the cost of installing gateway SMTP servers as >recommended, >and equip them with spam filtering. That will probably knock off 30% or >more of >your volume, and give you a valueadd(if users are paying) at the same >time. We >just started looking at postini as as alternative for what we are currently >running... havn't sifted through the effect on bandwidth yet to provide >recommendation though. > >Cheers, > >Dave > > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-isp" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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