The patch works both with stock Postfix and IPv6-patched Postfix. People using my TLS+IPv6 patch for Postfix 2.1.x will find a single reject file (src/smtpd/smtpd.c) that can easily be fixed. TLS and IPv6 support have been integrated into Postfix 2.2 so no patch issues with 2.2.x.

Important: this patch works with libspf2 version 2.0.x. Later versions introduce API changes and I haven't updated the patch for that yet.

Note: on the libspf2.org download page there's a "Postfix patch for libspf2" (with different version numbering) which is really this patch. This page will be more uptodate than the libspf2.org page though.

Patch 5 is identical to patch 4 but for a small change to compile cleanly with GCC 3.4.x.

• postfix-libspf2-2.2.0-5.patch - SPF patch 5 for Postfix 2.2.0 - 2.2.1 ( HTTP | FTP )
• postfix-libspf2-2.1.5-5.patch - SPF patch 5 for Postfix 2.1.3 - 2.1.5 ( HTTP | FTP )
• postfix-libspf2.README - Patch documentation (SPF_README) ( HTTP | FTP )

Comments welcome, see the README file for contact address.