Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
`/etc/pmg/node.conf` to `domain2.example` to allow the DNS server of
`domain2.example` to validate all challenges for `domain1.example`.
+[[sysadmin_certs_acme_dns_wildcard]]
+Wildcard Certificates
+^^^^^^^^^^^^^^^^^^^^^
+
+Wildcard DNS names start with a `*.` prefix and are considered valid for all
+(one-level) subdomain names of the verified domain. So a certificate for
+`*.domain.example` is valid for example for `foo.domain.example` and
+`bar.domain.example`, but not for `baz.foo.domain.example`.
+
+You can currently create wildcard certificates only with the
+https://letsencrypt.org/docs/challenge-types/#dns-01-challenge[DNS challenge type].
+
Combination of Plugins
^^^^^^^^^^^^^^^^^^^^^^