Whm-cpanel - How to stop open relay cpanel server, Stop Open Relay on cpanel

How to stop open relay cpanel server

Stop Open Relay of Exim

Telnet to yourmailserver at port 25 and issue all the following commands:

  telnet hostname/ip 25

  helo client.server.com

  mail from: xxx@somedomain.com

  rcpt to: yyy@somedomain.com

If you are getting the error “554 : Relay access denied” then the server is not an open Relay

If not Just pass the command “DATA” after the recipient and then enter the message ending with a period ie : “.”

If you get the reply “SUCCESS Relay Accepted – final response code 550″

Then as you feared your server is subjected to open relay and if not enjoy...

I hope your server is not open relay supporting, but if it is so, as it is a Cpanel Server you can stop it normally using the below scripts

  # /scripts/fixrelayd

  # /etc/rc.d/init.d/antirelayd restart

  # service exim restart

The topic on Whm-cpanel - How to stop open relay cpanel server is posted by - Math

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