Yeah it looks like there are files in the hooks folder:
post-commit.tmpl pre-commit.tmpl start-commit.tmpl
post-commit.tmpl contains the following line:
/usr/lib/subversion/hook-scripts/commit-email.pl "$REPOS" "$REV" firstname.lastname@example.org
Hopefully example.org hasn't been watching our checkins?
After making a change to this file is a restart of SVN needed?