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How to setup Multiple Mail Servers

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by cjcknight

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I want to setup a server that would accomodate 200,000 users with an alloted 5mb of email messages each. At the moment our mail server is running in a server using both smtp and pop3 on that machine(sendmail 8.11.6/8.11.6, Qpopper 4.0.3, Red Hat Linux 7.0). Previously, I have setup 2 mail server and declared that on my dns server. When mail server A dies, mail server B accepts the mail. The preference is 10 for mail server A and 20 for mail server B. That's for redundancy. But what I want is that to have multiple servers. For example for the first mail server handles the first 100,000 users, while the others handles 200,000 users. How can I do this?

thanks in advance.

5 replies

by jayanth

Maybe what you can do is, on your mail server (say) 'A', create the first 100,000 mail accounts with their mail boxes. Then for the next 100,000 mail accounts, put an alias for them pointing to mail server 'A1' where you can have the mailboxes of the last 100,000.

Like, in your /etc/mail/aliases on 'A'
user1 user1@mailsvrA
user2 user2@mailsvrA
...
...
userX userX@mailsvrA1
userX1 userX1@mailsvrA1
...
...

You could also employ OpenLDAP to do this. You can setup your mailserver 'A' to look-up LDAP for mail delivery where you can give the corresponding mail aliases.

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