## `domains.conf' file.
smtp:
driver = smtp
+ hosts_try_auth = *
hosts_require_tls = DOMKV(tls-peer-ca, {*}{})
+ hosts_require_auth = \
+ ${if bool {DOMKV(require-auth, {$value}{false})} {*}{}}
tls_certificate = DOMKV(tls-certificate, {${expand:$value}}fail)
tls_privatekey = DOMKV(tls-private-key, {${expand:$value}}fail)
tls_verify_certificates = DOMKV(tls-peer-ca, {${expand:$value}}fail)