I am not really sure where the best place to report this is, so I will just assume this will suffice.
On the http://www.postfix.org/docs.html page, the link http://yocum.org/faqs/postfix-tls-sasl.html referring to Postfix SASL + TLS + FreeBSD howto by Tim Yocum is broken. Also, the http://home.pages.de/~mandree/postfix/ link referenced as Postfix Howtos by Matthias Andree results in a 404 error.
