Juergen Daubert
bc3389f193
security fix, see https://lists.gnupg.org/pipermail/gnupg-announce/2020q3/000448.html
REQUIREMENTS
GnuPG requires a sendmail compatibility link '/usr/sbin/sendmail'. Be
sure that you have installed one of the following:
- esmtp
- masqmail
- postfix
- sendmail
- msmtp
- exim
PRE-INSTALL
POST-INSTALL
PRECAUTION