Apache Stop, Start and Restart Respectively
/etc/init.d/httpd stop
/etc/init.d/httpd start
/etc/init.d/httpd restart

Qmail Stop, Start and Restart Respectively
/etc/init.d/qmail stop
/etc/init.d/qmail start
/etc/init.d/qmail restart

Courier (IMAP & POP3) Stop, Start and Restart Respectively
/etc/init.d/courier-imap stop
/etc/init.d/courier-imap start
/etc/init.d/courier-imap restart

DNS (BIND) Stop, Start and Restart Respectively
/etc/init.d/named stop
/etc/init.d/named start
/etc/init.d/named restart

Dr. Web Antivirus Stop, Start and Restart Respectively
/etc/init.d/drwebd stop
/etc/init.d/drwebd start
/etc/init.d/drwebd restart

MySQL Stop, Start and Restart Respectively
/etc/init.d/mysqld stop
/etc/init.d/mysqld start
/etc/init.d/mysqld restart

ProFTP Stop, Start and Restart Respectively
/etc/init.d/proftpd stop
/etc/init.d/proftpd start
/etc/init.d/proftpd restart

Reference Documentation:
http://kb.parallels.com/en/3158