mailutils from server:mail project

For openSUSE Tumbleweed run the following as root:

zypper addrepo https://download.opensuse.org/repositories/server:mail/openSUSE_Tumbleweed/server:mail.repo
zypper refresh
zypper install mailutils

For 16.0 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/server:mail/16.0/server:mail.repo
zypper refresh
zypper install mailutils

For 16.1 run the following as root:

?