On Wed, February 8, 2006 3:54 pm, Albert Shih wrote:
Someone tell me the Cyrus imap is better than Courier-imap (Please don't
troll) because (this is what I understand but I never use it) it's easy to
split physicaly the smtp (with anti-virus/anti-spam/etc...) server and
the imap server. And between the smtp server and the imap server we can
use LSMTP (L for Ligth) protocol. The difference between LSMTP and SMTP is
the first is very light and more faster than SMTP.
Yes, Cyrus has a rep for scaling well in large installations although
it also has a reputation for being hard to configure. Courier also
scales very well though and can easily be spread across numerous
boxes with one handling SMTP and one handling IMAP, you can even do
multiple boxes per service. The best way to acheive this is probably
via a NFS share common to the SMTP and IMAP servers. The SMTP server
will write new mail to the Maildirs stored on the NFS Server and the
IMAP server will read/write the mail as users access it. Maildir,
Courier's backend storage method is quite capable over NFS and is
designed to prevent corruption.
Network / Systems Administrator
Information Technology Dept.
Philadelphia Biblical University