> -----Original Message----- > From: CentOS [mailto:centos-bounces at centos.org] On Behalf Of Bernie > Pannell > Sent: Monday, July 23, 2018 7:24 PM > To: CentOS mailing list > Subject: Re: [CentOS] Mail has quit working > > On 24 July 2018 at 08:39, TE Dukes <tdukes at palmettoshopper.com> wrote: > > > Checked all logs and the only thing I could find was in /var/log/maillog : > > warning hostname localhost does not resolve to address 127.0.0.1 > > > > has your /etc/hosts been modified recently? > does it contain a "127.0.0.1 localhost" or equivalent entry? > B Hi, thanks! First line of /etc/hosts: 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 also a few lines down, ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6