Twin directories of postfix:

[DIR]  ftp://ftp.dei.uc.pt/pub/linux/gentoo/portage/mail-mta/postfix/
[DIR]  ftp://ftp.song.fi/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.song.fi/pub/mirrors/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.nl.kernel.org/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.sac.sk/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.tuke.sk/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.tin.org/pub/mail/postfix/
[DIR]  ftp://ftp.padua.org/pub/net/mail/postfix/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/packages/current-src/pkgsrc/mail/postfix/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/NetBSD-release-4-0/src/gnu/dist/postfix/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/NetBSD-release-4-0/src/gnu/usr.sbin/postfix/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/NetBSD-release-3-1/src/gnu/dist/postfix/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/NetBSD-release-3-1/src/gnu/usr.sbin/postfix/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/NetBSD-release-3-0/src/gnu/dist/postfix/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/NetBSD-release-3-0/src/gnu/usr.sbin/postfix/
[DIR]  ftp://ftp.lug.udel.edu/pub/netbsd/NetBSD-current/src/gnu/dist/postfix/
[DIR]  ftp://ftp.lug.udel.edu/pub/netbsd/NetBSD-current/src/gnu/usr.sbin/postfix/
[DIR]  ftp://ftp.lug.udel.edu/pub/macports/dpupdate1/ports/mail/postfix/
[DIR]  ftp://ftp.lug.udel.edu/pub/macports/release/ports/mail/postfix/
[DIR]  ftp://ftp.funet.fi/.m/mirrors1/ftp.cert.dfn.de/pub/tools/net/postfix/
[DIR]  ftp://ftp.funet.fi/.m/mirrors3/ftp.debian.org/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.cica.es/mirrors/Linux/debian/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.uni-koeln.de/mirrors/debian/pool/main/p/postfix/
[DIR]  ftp://129.102.1.25/pub/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.rz.uni-karlsruhe.de/pub/mirror/ftp.de.debian.org/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.debian.org/pool/main/p/postfix/
[DIR]  ftp://ftp.ankara.edu.tr/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.fr.debian.org/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.mars.org/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.port80.se/debian/pool/main/p/postfix/
[DIR]  ftp://ftp2.sk.freebsd.org/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.auckland.ac.nz/linux/dists/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.ac-grenoble.fr/mirrors/linux/distributions/debian/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.lf.net/pub/Mirrors/ftp.debian.org/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.botik.ru/pub/linux/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.iavsc.org/pub/linux/distributions/Debian/pool/main/p/postfix/
[DIR]  ftp://ftp.rfc822.org/pub/mirror/ftp.debian.org/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.wh2.tu-dresden.de/pub/mirrors/debian/pool/main/p/postfix/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/NetBSD-current/src/gnu/dist/postfix/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/NetBSD-current/src/gnu/usr.sbin/postfix/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-current/src/gnu/dist/postfix/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-current/src/gnu/usr.sbin/postfix/
[DIR]  ftp://ftp.skynet.be/mirror2/suse.com/people/varkoly/postfix/
[DIR]  ftp://ftp.suse.com/pub/people/varkoly/postfix/
[DIR]  ftp://ftp.swin.edu.au/gentoo-portage/mail-mta/postfix/
[DIR]  ftp://ftp.ing.umu.se/linux/gentoo-portage/mail-mta/postfix/
[DIR]  ftp://ftp.mgts.by/pub/gentoo/gentoo-portage/mail-mta/postfix/
[DIR]  ftp://ftp.prz.rzeszow.pl/pub/gentoo/portage/mail-mta/postfix/
[DIR]  ftp://ftp.cs.mun.ca/pub/mirror/gentoo-portage/mail-mta/postfix/
[DIR]  ftp://ftp.wh2.tu-dresden.de/pub/mirrors/gentoo-portage/mail-mta/postfix/