From owner-freebsd-questions Tue Mar 30 12:10:57 1999 Delivered-To: freebsd-questions@freebsd.org Received: from ex-mail.vas-net.net (ex-mail.vas-net.net [194.165.197.242]) by hub.freebsd.org (Postfix) with ESMTP id A7FD615047 for ; Tue, 30 Mar 1999 12:10:56 -0800 (PST) (envelope-from julian@vas-net.net) Received: by ex-mail.vas-net.net with Internet Mail Service (5.5.2232.9) id ; Tue, 30 Mar 1999 21:18:55 +0100 Message-ID: <63D4D74C4243D211849300A0C972505904F367@ex-mail.vas-net.net> From: "Jules D. Salter" To: "'freebsd-questions@freebsd.org'" Subject: Date: Tue, 30 Mar 1999 21:18:54 +0100 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2232.9) Content-Type: text/plain Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I've got a couple of Design Questions that i'd like to throw around. Any comments on this would be appreciated. I've designing a Qmail Mail Server for a client. Basically the setup involves 3 machines. mail1 mail2 --- the two Qmail Mail Processing Machines both with the POP3 daemon running. central --- A master server with Large Raid Installed, All 3 machines are running FreeBSD 3.1-RELEASE Mail 1 and 2 connect to the mail directories on Central via NFS. These machines will load share mail delivery by using Alternate A records in the DNS. I chose Qmail's 'Maildir' Format to eliminate the problems of Sendmail's File Locking over NFS. I intend to setup 'Central' as the Master Password Server using NIS. Mail1, and Mail2 will be NIS clients, or perhaps secondary password servers. My main concern is that of scalability. Typical load for this system will be 100,000 to 1 million user accounts. Has anybody had any experience of scaling this number of accounts over NIS? Would their be a more viable alternative to using NIS ? I know the standard master.passwd file on FreeBSD is hashed for fast machine lookups, but is the same true for the NIS password file ? While a NIS database is being updated, can a NIS client still query the password file ? Once last question, I'll need a Maildir for each user on the system, normally these directory all get mounted off the same directory, e.g. /spool/user1 /spool/user2 /spool/user3 obviously it's not a good idea to have 10000 files in one directory. Could anybody suggest a reasonable cut off point before creating a new subdirectory, or perhaps a totally different file storage system ? Thanks in advance, Regards, Jules EUROPA NET DESIGN e-mail: jules@vas-net.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message