* The old server uses default outbound by default unless detour is specified; the new one uses dialer just like outbound, which is equivalent to using an empty direct outbound by default.
* The old server uses `address_resolver` and `address_strategy` to resolve the domain name in the server; the new one uses `domain_resolver` and `domain_strategy` in [Dial Fields](/configuration/shared/dial/) instead.
### Fields
#### server
==Required==
The address of the DNS server.
If domain name is used, `domain_resolver` must also be set to resolve IP address.
#### server_port
The port of the DNS server.
`853` will be used by default.
#### path
The path of the DNS server.
`/dns-query` will be used by default.
#### headers
Additional headers to be sent to the DNS server.
#### tls
TLS configuration, see [TLS](/configuration/shared/tls/#outbound).
### Dial Fields
See [Dial Fields](/configuration/shared/dial/) for details.