Configure Mail Server with Postfix & Dovecot on RHEL 7.1
Postfix is a free and open-source mail transfer agent (MTA) that routes and delivers electronic mail, intended
as an alternative to Sendmail MTA and port no is 25.
Dovecot is an open source IMAP and POP3 server for Linux/UNIX-like systems, written primarily with security In mind and port no is IMAP 143 & POP3 110.
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linux smtp server
