Testing SMTP & IMAP Via Telnet
We will testing out our Postfix Mailserver via Telnet
Testing SMTP Postfix
#telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 mail.postfixrocks.org ESMTP Postfix
ehlo mail.postfixrocks.org
250-mail.postfixrocks.org
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-AUTH PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
Testing IMAP
#telnet localhost 143
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
* OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE ACL ACL2=UNION STARTTLS] Courier-IMAP ready. Copyright 1998-2008 Double Precision, Inc. See COPYING for distribution information.
a login postmaster password
a OK LOGIN Ok.
If you see output like above, the installation has done perfectly.