Postfix header_checks and webpage validation

Are you sick and tired of all kinds of virus warning in your mail? It would be nice to just bounce it back to the clueless sender at the MTA level, right? If you use Postfix you're in luck, just use antiantivirus.txt as header_checks and most of it should go away. There's a procmail version named antiantivirus_procmail.txt too. They're both derived from SpamAssassin and the checks it makes for “spamness”.

I've spent some time the last few days making sure my web-pages are valid XHTML 1.1, and since it was already XHTML 1.0 Strict it wasn't really a big deal at all. The hardest part was upgrading tidy to version 2004-02-05 instead of the ancient one in the OpenBSD ports tree. I should make a www/tidy-devel port, as it is a quite different beast now.

Now I just need to figure out a way to use the suggestions in Mark Pilgrim's “The Road to XHTML 2.0: MIME Types” over at, it isn't as straightforward as it looks, at least not in my test setup here at home.