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Home » Archive by category Postfix

Postfix load balancing and High Availability with HaProxy


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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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How to enable rbls in postfix to prevent spam messages.


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This article will describe that how to enable rbls in postfix and prevent the spam mails on the server. Configure Postfix to verify the IP address of the incoming mail against one or more RBL’s. If the IP is a contest, then server will not accept the message...
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configure postfix mail server with cyrus-imap and sasl authentication


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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


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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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How to block particular file extension attachment in postfix


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Postfix provides Mime header check for all incoming messages. You can restrict on .exe / .bat / .vbs files and block all attachments. mime_header_checks directive allows you to restrict file extension on your mail server. On most mail server the first thing that needs to be done is...
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