+ tls_verify_cert_hostnames =
+
+ # this will fail to verify the cert name and fallback to unencrypted
+ send_to_server_req_failname:
+ driver = smtp
+ allow_localhost
+ hosts = serverbadname.example.com
+ port = PORT_D
+ hosts_try_fastopen = :
+
+ tls_verify_certificates = CA1
+ tls_verify_cert_hostnames = HOSTIPV4
+ tls_verify_hosts = *
+
+ # this will pass the cert verify including name check
+ send_to_server_req_passname:
+ driver = smtp
+ allow_localhost
+ hosts = server1.example.com
+ port = PORT_D
+ hosts_try_fastopen = :
+
+ tls_verify_certificates = CA1
+ tls_verify_cert_hostnames = HOSTIPV4
+ tls_verify_hosts = *
+
+ # this will fail the cert verify name check, because CNAME rules
+ send_to_server_req_failchain:
+ driver = smtp
+ allow_localhost
+ hosts = serverchain1.example.com
+ port = PORT_D
+ hosts_try_fastopen = :
+
+ tls_verify_certificates = CA1
+ tls_verify_cert_hostnames = HOSTIPV4
+ tls_verify_hosts = *
+
+ # this will pass the cert verify name check, because CNAME rules
+ send_to_server_req_passchain:
+ driver = smtp
+ allow_localhost
+ hosts = alternatename.server1.example.com
+ port = PORT_D
+ hosts_try_fastopen = :
+
+ tls_verify_certificates = CA1
+ tls_verify_cert_hostnames = HOSTIPV4
+ tls_verify_hosts = *