Comment 1 for bug 266382

Originator: NO

Perhaps the 'bug' is in your modified template. It seems to me that your
modification of the template is the most likely cause of this.

Have you changed the substitution strings %(listname)s, %(hostname)s, etc.
in any way? If you change anything in these strings, they will cease to
work.

Please check for

lists/<listname>/fi/postauth.txt
templates/<list.host_name>/fi/postauth.txt
templates/site/fi/postauth.txt
templates/fi/postauth.txt

The first of these that exists is the Finnish template that will be used.
Review that template, and if you can't find a problem there, I don't know
where it can be unless somehow the call to
 Utils.maketext('postauth.txt', d, raw=1, mlist=mlist),
in Mailman/Handlers/Hold.py has been changed.