[CentOS] Mail has quit working

On 08/25/2018 11:30 AM, Pete Biggs wrote:
> You are multiply defining localhost and localhost.localdomain. All
> there should be is:
>
>     127.0.0.1		localhost.localdomain localhost
>     ::1	 		localhost6.localdomain6 localhost6

The entries he posted were normal, default entries for CentOS and Fedora 
systems.