The problem is, can not send mail via SMTP using popular scripts Opencart, SMF, Osclass.
The problem was lapping Plesk 11.5 via 587 port.
That was timeout connection or authorization error with the correct settings.
Mail may be sent, sometimes not. No longer working than working.
At the same...
Bind (or named) is marked as installed.
I have solved the problem. May be help someone:
/var/named/chroot/etc/named.conf - was empty !.
# locate named.conf
/etc/named.conf
/etc/named.conf.saved_by_psa
/usr/share/doc/bind-9.8.2/named.conf.default
/usr/share/doc/bind-9.8.2/sample/etc/named.conf...
Installing the Plesk 12 on a clean Centos 6.6.
DNS Server (BIND) is start.
When you try to restart Bind :
Error: Unable to make action: Unable to manage service by dnsmng: dnsmng: Service /etc/init.d/named failed to start
('--start', 'dns')
If you restart the server - the problem is the same...