After expansion, this can be a list.
Each element in turn is put into the &%$dkim_domain%& expansion variable
while expanding the remaining signing options.
-If it is empty after expansion, DKIM signing is not done.
+If it is empty after expansion, DKIM signing is not done,
+and no error will result even if &%dkim_strict%& is set.
.option dkim_selector smtp string list&!! unset
This sets the key selector string.
Each element in turn is put in the expansion
variable &%$dkim_selector%& which may be used in the &%dkim_private_key%&
option along with &%$dkim_domain%&.
-If the option is empty after expansion, DKIM signing is not done for this domain.
+If the option is empty after expansion, DKIM signing is not done for this domain,
+and no error will result even if &%dkim_strict%& is set.
.option dkim_private_key smtp string&!! unset
This sets the private key to use.
be signed. This case will not result in an error, even if &%dkim_strict%&
is set.
.endlist
-If the option is empty after expansion, DKIM signing is not done.
.option dkim_hash smtp string&!! sha256
Can be set alternatively to &"sha1"& to use an alternate hash