Tried to test my smtp server (centos server), I am using telet at centos
When I tried to test using code:
telnet 127.0.0.1 25
Trying 127.0.0.1... Connected to 127.0.0.1. Escape character is '^]'. 220 smtp.mail.forexmart.eu ESMTP Postfix
But when I tried to test using:
telnet localhost 25
Connected to localhost.
Escape character is '^]'.
Connection closed by foreign host.