For openSUSE Factory ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/server:messaging/openSUSE_Factory_ARM/server:messaging.repo
zypper refresh
zypper install python-dnspython
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/server:messaging/openSUSE_Factory/server:messaging.repo
zypper refresh
zypper install python-dnspython
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/server:messaging/15.6/server:messaging.repo
zypper refresh
zypper install python-dnspython
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/server:messaging/15.5/server:messaging.repo
zypper refresh
zypper install python-dnspython
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/server:messaging/15.4/server:messaging.repo
zypper refresh
zypper install python-dnspython