Chris Shenton wrote:
robert <[EMAIL PROTECTED]> 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

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.


This message was checked by forty monkeys and
found to not contain any SPAM whatsoever.

Your monkeys may vary
_______________________________________________ mailing list
To unsubscribe, send any mail to "[EMAIL PROTECTED]"

Reply via email to