=> "/opt/pkg/sbin/pkg_add" ["-K", "/opt/pkg/.pkgdb", "nbpatch-20151107", "cwrappers-20220403", "checkperms-1.12", "qmail-1.03nb54", "perl-5.42.2"]
pkg_add: package `nbpatch-20151107' was already installed as dependency, now marked as installed manually
pkg_add: package `cwrappers-20220403' already recorded as installed
openssl-3.6.2: copying /opt/pkg/share/examples/openssl/openssl.cnf to /opt/pkg/etc/openssl/openssl.cnf
ucspi-ssl-0.999.13.06: copying /opt/pkg/share/examples/ucspi-ssl/dh2048.pem to /opt/pkg/etc/ucspi-ssl/dh2048.pem
gettext-lib-0.22.5: copying /opt/pkg/share/examples/gettext/locale.alias to /opt/pkg/share/locale/locale.alias
===========================================================================

ERROR: /var/qmail exists and is non-empty.

Please remove or rename it, then try again.

===========================================================================
pkg_add: qmail-1.03nb54: install script returned error status
pkg_add: 1 package addition failed