I activatet dkim-milter as in this doc : http://www.virtualmin.com/documentation/email/dkim
In the mail.info log i see:
Jul 14 15:08:35 s3 dkim-filter: Sendmail DKIM Filter v2.8.3 starting (args: -x /etc/dkim-filter.conf -u dkim-filter -P /var/run/dkim-filter/dkim-filter.pid -p inet:8891@localhost -b s)
So i assume things are working. But when i send a mail with the linux mail command, i do not see the DKIM headers in the mail, neither when i send it with PHP. How can i achieve that the mails which are being send by PHP are getting signed?