With the backported git 1.6 packages installed (see Backport git 1.6 for debian) - to add mailing lists for commits/tags:
cd src/<project>.git/hooks ln -s /usr/share/doc/git-core/contrib/hooks/post-receive-email post-receive git config --add hooks.mailinglist "development@mailhost.tld" git config --add hooks.announcelist "announce@mailhost.tld" git config --add hooks.envelopesender "from_addr@host.tld"
Note that /usr/share/doc/git-core/contrib/hooks/post-receive-email must be executable - chmod a+x if you need to.