On August 5, 2005 06:31 pm, A. Khattri wrote: > On Fri, 5 Aug 2005, daniel wrote: > > So at the moment, my main issues are: > > > > - How do I replicate the user list from the master to the satellites? > > - What MTA should I use on the satellites and how would I configure it? > > > > I don't even know if "cluster" is the right word since whenever I google > > for it, i run into references to LVS and Beowulf clustering which is not > > what I need. > > Im sure you'll get answers for all the MTA's so maybe the best thing is > just to describe what we do. > > I work for an ISP, and we have mail servers supporting several thousand > users. For this setup we are using qmail + vpopmail + MySQL. We looked at > LDAP too and concluded it was an ugly beast ;-) Our vpopmail account > details all live in MySQL - separate read and write database servers help > spread the load (we replicate between servers). vpopmail uses maildirs by > default - this means we can NFS mount delivery folders across machines > without worrying about file-locking, etc. This also means you can spread > POP3/IMAP traffic across several machines if you want. > > We also have three servers dedicated to spam and virus filtering - those > run daemonized spamd and clamav (we are using a local DNS zone to > round-robin spamd connections so the load is again spread across all three > filtering servers). > > We are also using squirrelmail and qmailadmin to provide a web mail > interface and a web postmaster interface for domain accounts.
very cool. how many servers are you using for this? do you have a rough ratio for users:servers? -- every day you sit behind your desk and you learn a little more how to accept the world the way it is. well, here's the rub... heroes don't do that. heroes don't accept the world the way it is. they fight it. - lindsay, angel -- [email protected] mailing list
