Date: Mon, 17 Apr 2006 15:04:02 -0400 From: DAve <dave.list@pixelhammer.com> To: freebsd-questions@freebsd.org Subject: Re: OT - Scalable email server solution needed Message-ID: <4443E6A2.3020904@pixelhammer.com> In-Reply-To: <86lku411kv.fsf@PECTOPAH.shenton.org> References: <443731E5.9030209@greenmeadow.ca> <1144484393.9480.5.camel@localhost.localdomain> <86lku411kv.fsf@PECTOPAH.shenton.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Chris Shenton wrote: > robert <bsd@bathnetworks.com> writes: > >> Have a look at qmail, It is very scalable and well supported with >> various sites and mailing lists. Iv'e been using it for well over a year >> now. > > Most important thing, IMHO, is uptime. If you use the Maildir mailbox > format you can put it on a solid NFS server like a NetApp and front it > with any number of MTAs and IMAP servers. Maildir is NFS-safe. > If a (used) netApp is too expensive for you, the same approach still > keeps your complicated services off your most critical file server. > > I used qmail-ldap (qmail with LDAP for virtualization) and a handfull > of 1U SMTP/IMAP/POP/Squirrelmail servers. Each server had a local > read-only replica of the LDAP data sync'd from the LDAP master. Zero > downtime in well over a year, even with taking individual boxes down > (one at a time) for upgrades and such. > > You could also look at Vpopmail virtualization for qmail. I've not > tried to scale that across multiple boxes so I don't know how you'd > replicate the account info. Vpopmail can use a SQL store for account info. Like you we have several 1U SMTP/IMAP/POP/Squirrelmail toasters running with all mail stored on a common NFS server. Which also is home to SQL for vpopmail, and for spamd. I have the NFS server (mail store is Raid5) on a second 1 gb network. Maildir delivery and SQL lookups are very very fast, even under a heavy load. 2+ years with the only issue being disk failure on the OS mirror of the toasters. I can recommend it. DAve -- This message was checked by forty monkeys and found to not contain any SPAM whatsoever. Your monkeys may vary
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4443E6A2.3020904>