Massimiliano wrote:
Hi !
I'm now using a Qmail Server for handling about 40 e-mail accounts .
My boss asked me today to raise the "availability level " of the
server next to 100% because the e-mail service is getting for my
company more and more important so my obvious conclusion is that I'll
need another Qmail server . The question is : how shall I setup the
main Server ( let's say qmail01) in order to automatically route
all the incoming e-mails to the qmail02 ? In the case of a crash ,
the only thing i'd have to do is changing the port-forwarding (25
SMTP) on my firewall changing from IP qmail01 to IP qmail02 and tell
users to use the new mail server through squirrelmail
thanks
A while ago someone had talked about using heartbeat and a mysql
sync-ing package that would do what you're asking. What I use here is a
backup caching mail server (QMT install with the domains added into
/var/qmail/control/rcpthosts and NO users or domains added to it), with
a queuelifetime of 5 days and an MX priority of 20 (main server has a
10). That way, if the main server goes down for some reason, the backup
will still accept the messages, and try and deliver them to the main
server for 5 days before it gives up and bounces them back to the
sender. I then run the backup script I've put together on the main
server, sending the backup file to the backup server every night. If
the main server has a complete hardware crash, I can rebuild it and
restore QM on it within the 5 day time-limit and the backup server will
then deliver all the mail it's been holding to the main one once it's
back online. Worst case is that 6-12 hours of emails are lost during
the wee hours of the morning (low traffic anyway). That has worked for
me, and I didn't see a real need to go through the whole process of
setting up heartbeat and sync'ing the database/directories all the time,
plus I can still use the backup server to do things such as FTP and
serving other webpages.
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
