On Thu, Jan 13, 2011 at 09:59:26AM -0200, Deives Michellis wrote: > Have you guys considered using Perdition to proxy/redirect IMAP/POP to > distribute backend storage to as many as backends as you want?
Yes, but I prefer dovecot (since that's what we're running on the backend POP/IMAP-servers). It too can statically direct clients to their home-servers based on db or ldap lookup, but since all our backend servers has access to the same fs, we just let the dovecot director/proxy direct them to a random host and remember which host that was for the next X minutes. > You > wont need any SAN/NAS/NFS/GFS/whatever, just a user/storage mapping > (ldap, mysql, etc...), and you might even add spare or active/active > servers to each storage with DRDB or something alike. We use SAN+GPFS to have all backend POP/IMAP-servers be active/active/active/active/active/active/active :-) As long as >50% of them are up, all users should have access to their mailstores. -jf
