E-mail internet hosting may embody limits on the full number of email addresses, storage area or bandwidth permitted to an account on shared, VPS, or devoted server hardware. Most e mail server assist for domains in hosting is established via the WHM distribution of cPanel on CentOS, CloudLinux, or Ubuntu. WHM presently supports the Dovecot mail server with OpenSSL for email, which allows SMTP, POP3, and IMAP configuration in cPanel for each individual electronic mail account on shared Linux hardware.