Topic: Backup Email Server

[icemannz]

Can someone tell me if it is possible to have a complete backup email server.
I don't just want a backup server to hold email until the main email server comes back up.
I am really after 2 email servers. Both email servers hold a copy of all the email for all users. Email would need to be sent or copied between servers ?
Any Help would be appreciated.

[CharlieBrady]

Can someone tell me if it is possible to have a complete backup email server.
I don't just want a backup server to hold email until the main email server comes back up.
I am really after 2 email servers. Both email servers hold a copy of all the email for all users. Email would need to be sent or copied between servers ?

It sounds like you want a High-Availability clustering solution. Have a look over at:

http://linux-ha.org/

[ryan]

If you don't have a lot of users, setup 2 sme servers with their own domains (seperate NS/MX records).  On the primary server, set each user to "both" deliver and forward email to the other domain.  Create duplicate accounts on the other sme server.  

just a thought, hope it helps,

ryan

[CharlieBrady]

If you don't have a lot of users, setup 2 sme servers with their own domains (seperate NS/MX records).  On the primary server, set each user to "both" deliver and forward email to the other domain.  Create duplicate accounts on the other sme server.

That deals with delivery of messages to a backup store. It doesn't deal with IMAP accesses which change the state of messages, such as mark them read, delete them, move to other folders etc. It's not a redundancy solution.

[ryan]

Agreed.  The 'other' sme would simply be a backup store of only inbox "new" messages.  Sent, Deleted, and any custom IMAP folders would not exist or be used.