每次重启系统后，welly自动登录水木时，就会跳出这个信息。
有点烦人，不知道有人解决过没？

The host key is not cached for this server:
  bbs.newsmth.net (port 22)
You have no guarantee that the server is the computer you
think it is.
The server's ecdsa-sha2-nistp256 key fingerprint is:
  ecdsa-sha2-nistp256 256 SHA256:HsRMZnW4YqU3fOoYCcchTwK7b7Zqcbjap04O9OCtkG4
If you trust this host, enter "y" to add the key to Plink's
cache and carry on connecting.
If you want to carry on connecting just once, without adding
the key to the cache, enter "n".
If you do not trust this host, press Return to abandon the
connection.
Store key in cache? (y/n, Return cancels connection, i for more info)
--
FROM 183.30.218.*