Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Programming
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Databases
Mail Systems
openSolaris
Eclipse Documentation
Techotopia.com
Virtuatopia.com
Answertopia.com

How To Guides
Virtualization
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Windows
Problem Solutions
Privacy Policy

  




 

 

Postfix Documentation
Previous Page Home Next Page

Postfix IPv6 Support


Introduction

Postfix 2.2 introduces support for the IPv6 (IP version 6) protocol. IPv6 support for older Postfix versions was available as an add-on patch. The section " Compatibility with Postfix <2.2 IPv6 support" below discusses the differences between these implementations.

The main feature of interest is that IPv6 uses 128-bit IP addresses instead of the 32-bit addresses used by IPv4. It can therefore accommodate a much larger number of hosts and networks without ugly kluges such as NAT. A side benefit of the much larger address space is that it makes random network scanning impractical.

Postfix uses the same SMTP protocol over IPv6 as it already uses over the older IPv4 network, and does AAAA record lookups in the DNS in addition to the older A records. Information about IPv6 can be found at https://www.ipv6.org/.

This document provides information on the following topics:

Postfix Documentation
Previous Page Home Next Page