The debian/watch file uses an outdated SourceForge URL pattern that no
longer matches any files:

http://sf.net/bogofilter/ bogofilter-([\d.]*).tar.gz debian uupdate

Two problems:

1. The URL http://sf.net/bogofilter/ does not resolve to a usable file
   listing. The upstream files are now at:
https://sourceforge.net/projects/bogofilter/files/bogofilter-stable/

2. The upstream tarball format changed from .tar.gz to .tar.xz. The
   current stable release (1.2.5) is only available as .tar.xz.

A corrected watch file is attached. It has been tested with uscan and
correctly detects 1.2.5 as the newest upstream release.

Regards,
James Montgomery