For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:weberho:sqmail/openSUSE_Tumbleweed/home:weberho:sqmail.repo
zypper refresh
zypper install ucspi-ssl
For openSUSE Slowroll run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:weberho:sqmail/openSUSE_Slowroll/home:weberho:sqmail.repo
zypper refresh
zypper install ucspi-ssl
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:weberho:sqmail/15.6/home:weberho:sqmail.repo
zypper refresh
zypper install ucspi-ssl
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:weberho:sqmail/15.5/home:weberho:sqmail.repo
zypper refresh
zypper install ucspi-ssl