sasl and tls with dns load balancing

Posted by achal tomar on Server Fault See other posts from Server Fault or by achal tomar
Published on 2012-04-14T08:47:01Z Indexed on 2012/04/14 11:32 UTC
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I am using DNS load balancing in my centOs 5 server.The mail sent to the load balancer server are balanced by sending them to 4 more servers who then pass the mails to their destinations in the network.The mails are generated by a Php script which gives all the mail to the load balancer server. Now i want sasl and tls authentication in the load balancer server so that i can prevent the mail server from spammers,Can anyone tell me how to do this. The load balancer pass the mails to other servers based on equal mx record preference,so i want sasl authentication with Dns load balancing.

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