하지만, 세팅상의 실수로 인해 릴레이를 허용하는 경우가 가끔 있습니다.
다음의 주소에서 메일 서버의 릴레이 여부를 판단할 수 있으니, 참고하시기 바랍니다.
http://www.abuse.net/relay.html
메일 서버의 IP 주소를 입력하고 잠시 기다리면, 17가지 테스트를 통해 릴레이 여부를 자세히 알려 줍니다.
아래 내용은 스팸 릴레이테스트를 하는 과정을 보여줍니다.
코드:
Connecting to mail.softmail.co.kr for anonymous test ...
<<< 220 MailTOP.net ESMTP server ready Fri, 25 Oct 2002 19:43:27 +0900
>>> HELO www.abuse.net
<<< 250 mta0.kpost.com
Relay test 1
>>> RSET
<<< 250 Ok resetting state
>>> MAIL FROM:
<<< 250 Sender Ok
>>> RCPT TO:
<<< 550 이 도메인은 릴레이가 허락되지 않습니다. relaying mail to abuse.net is not allowed
Relay test 2
>>> RSET
<<< 250 Ok resetting state
>>> MAIL FROM:
<<< 550 Sender address is missing a domain
Relay test 3
>>> RSET
<<< 250 Ok resetting state
>>> MAIL FROM:<>
<<< 250 Sender <> Ok
>>> RCPT TO:
<<< 550 이 도메인은 릴레이가 허락되지 않습니다. relaying mail to abuse.net is not allowed
Relay test 4
>>> RSET
<<< 250 Ok resetting state
>>> MAIL FROM:
<<< 250 Sender Ok
>>> RCPT TO:
<<< 550 이 도메인은 릴레이가 허락되지 않습니다. relaying mail to abuse.net is not allowed
Relay test 5
>>> RSET
<<< 250 Ok resetting state
>>> MAIL FROM:
<<< 550 IP addresses are not accepted
Relay test 6
>>> RSET
<<< 250 Ok resetting state
>>> MAIL FROM:
<<< 250 Sender Ok
>>> RCPT TO:
<<< 550 이 도메인은 릴레이가 허락되지 않습니다. relaying mail to mail.softmail.co.kr is not allowed
Relay test 7
>>> RSET
<<< 250 Ok resetting state
>>> MAIL FROM:
<<< 250 Sender Ok
>>> RCPT TO:
<<< 550 이 도메인은 릴레이가 허락되지 않습니다. relaying mail to [211.117.63.131] is not allowed
Relay test 8
>>> RSET
<<< 250 Ok resetting state
>>> MAIL FROM:
<<< 250 Sender Ok
>>> RCPT TO:<"relaytest@abuse.net">
<<< 550 Invalid recipient: <"relaytest@abuse.net">
Relay test 9
>>> RSET
<<< 250 Ok resetting state
>>> MAIL FROM:
<<< 250 Sender Ok
>>> RCPT TO:<"relaytest%abuse.net">
<<< 550 Invalid recipient: <"relaytest%abuse.net">
Relay test 10
>>> RSET
<<< 250 Ok resetting state
>>> MAIL FROM:
<<< 250 Sender Ok
>>> RCPT TO:
<<< 553 Invalid address syntax
Relay test 11
>>> RSET
<<< 250 Ok resetting state
>>> MAIL FROM:
<<< 250 Sender Ok
>>> RCPT TO:<"relaytest@abuse.net"@mail.softmail.co.kr>
<<< 550 이 도메인은 릴레이가 허락되지 않습니다. relaying mail to mail.softmail.co.kr is not allowed
Relay test 12
>>> RSET
<<< 250 Ok resetting state
>>> MAIL FROM:
<<< 250 Sender Ok
>>> RCPT TO:
<<< 553 Invalid address syntax
Relay test 13
>>> RSET
<<< 250 Ok resetting state
>>> MAIL FROM:
<<< 250 Sender Ok
>>> RCPT TO:<@mail.softmail.co.kr:relaytest@abuse.net>
<<< 550 이 도메인은 릴레이가 허락되지 않습니다. relaying mail to abuse.net is not allowed
Relay test 14
>>> RSET
<<< 250 Ok resetting state
>>> MAIL FROM:
<<< 250 Sender Ok
>>> RCPT TO:<@[211.117.63.131]:relaytest@abuse.net>
<<< 550 이 도메인은 릴레이가 허락되지 않습니다. relaying mail to abuse.net is not allowed
Relay test 15
>>> RSET
<<< 250 Ok resetting state
>>> MAIL FROM:
<<< 250 Sender Ok
>>> RCPT TO:
<<< 550 Invalid recipient:
Relay test 16
>>> RSET
<<< 250 Ok resetting state
>>> MAIL FROM:
<<< 250 Sender Ok
>>> RCPT TO:
<<< 550 이 도메인은 릴레이가 허락되지 않습니다. relaying mail to mail.softmail.co.kr is not allowed
Relay test 17
>>> RSET
<<< 250 Ok resetting state
>>> MAIL FROM:
<<< 250 Sender Ok
>>> RCPT TO:
<<< 550 이 도메인은 릴레이가 허락되지 않습니다. relaying mail to [211.117.63.131] is not allowed