Re: Courier setup for over 17.000 Users [was: Mail clustering]
Op 4-apr-2007, om 19:54 heeft Michelle Konzack het volgende geschreven:
bottleneck I think one server for smtp + pop3/imap is enough and you
And there is the problem!
I have configured ONE inbound "courier-mta-ssl" and curently FIVE
"courier-imap-ssl" since I have too much $USER accessing the IMAP
at the same time. Arround 600-1400 $USER of over 17.000 Accounts
The mailboxes itself are on 5 seperated NFS-Servers.
I have setup a round robin for <mail.mydomain.tld> for the IMAP
Servers but it does not realy work, specialy if $USER use the
Webinterface on <webmail.mydomain.tld> which use 2 Servers currently.
Why don't you add a loadbalancer in front of your IMAP servers, that
spreads inbound connections based on the load of the machines in the
cluster? See http://www.linuxvirtualserver.org/ for howto's.