When I used 127.0.0.1 as host to connect to mysql server it failed to connect 

```
     Issue :  Access denied 

```

When I used localhost as host to connect to mysql server it will able connect.

"127.0.0.1" is same as "localhost".

Also some where i read that mysql not able to 

```
  MySQL won't auto-resolve the host name

```

What does it mean ?