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Postfix load balancing and High Availability with HaProxy

HAProxy is a absolutely price less open source high availability and load balancing solution for application layer protocols such as HTTP, SMTP, MYSQL etc…. HAProxy provides fast, reliable, stable high availability and load balacing solution for small, medium and enterprises organizations. It is very useful for high volume...
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configure postfix mail server with cyrus-imap and sasl authentication

This article will describe you step by step installation and configuration postfix mail server with cyrus-imap and sasl authentication. Postfix as MTA (mail transfer agent) SASL (Simple Authentication and Security Layer)for Authentication Cyrus-IMAP Package installation #yum install postfix system-switch-mail cyrus-imapd cyrus-plain cyrus-md5 cyrus-utils #rpm -qa cyrus* cyrus-sasl-lib-2.1.23-13.el6_3.1.x86_64 cyrus-sasl-plain-2.1.23-13.el6_3.1.x86_64...
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How to configure mx-gateway (mail gateway) on postfix

There are basically two main security profit to using an postfix mx-gateway. One of, it’s much easier to keep secure a single SMTP gateway from external threats than it’s keep secure multiple internal e-mail servers. Second one is, separating Internet mail from internal mail permits one to move...
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