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Postfix Documentation
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The following information is in part based on information that was compiled by Dean Strik.

  • Mark Huizer wrote the original Postfix IPv6 patch.

  • Jun-ichiro 'itojun' Hagino of the KAME project made substantial improvements. Since then, we speak of the KAME patch.

  • The PLD Linux Distribution ported the code to other stacks (notably USAGI). We speak of the PLD patch. A very important feature of the PLD patch was that it can work with Lutz Jaenicke's TLS patch for Postfix.

  • Dean Strik extended IPv6 support to platforms other than KAME and USAGI, updated the patch to keep up with Postfix development, and provided a combined IPv6 + TLS patch. Information about his effort can be found on Dean Strik's Postfix website at

  • Wietse Venema took Dean Strik's IPv6 patch, merged it into Postfix 2.2, and took the opportunity to eliminate all IPv4-specific code from Postfix that could be removed. For systems without IPv6 support in the kernel and system libraries, Postfix has a simple compatibility layer, so that it will use IPv4 as before.

Postfix Documentation
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