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→Testing the connection to the Postfix Service
# Connect from your server to your server using telnet by issuing the following command:<br><source lang="bash">telnet localhost 25</source>
# Note that it should indicated that you are connected by displaying the the text:'''Escape character is '^]''', which indicates that in order to end the telnet session, you can hold control and press the square bracket key(and then Enter). Perform that key-combination to end the telnet session.
#Enter the command '''exit''' to close the telnet application.