Your hostname, , and the servername you have set in DirectAdmin, server.host.com, do not match.where the hostname is blank (note the ", ,"), a reported cause of this is an incorrectly setup /dev/null file.
/bin/hostname --fqdnto ensure you get something displayed.
mknod -m 0666 /dev/null c 1 3
hostname: Name or service not knownis to edit your /etc/hosts file, and change:
126.96.36.199 your.hostname.comto be:
188.8.131.52 your.hostname.com yoursuch that you have both the long and short forms of your hostname beside your server IP.
Your hostname, bob.host.com, and the servername you have set in DirectAdmin, server.host.com, do not match.it means you just need to update the hostname: