plesk:/var/mail/ham# telnet relay-test.mail-abuse.org
Trying 168.61.4.13...
Connected to Cygnus.Mail-Abuse.ORG.
Escape character is '^]'.
Connecting to 1.2.3.4 ...
<<< 220 domain.tld ESMTP
>>> HELO cygnus.mail-abuse.org
<<< 250 domain.tld
:Relay test: #Quote test
>>> mail from: <[email protected]>
<<< 250 ok
>>> rcpt to: <"[email protected]">
<<< 553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #Test 1
>>> mail from: <[email protected]>
<<< 250 ok
>>> rcpt to: <[email protected]>
<<< 553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #Test 2
>>> mail from: <[email protected]>
<<< 250 ok
>>> rcpt to: <[email protected]>
<<< 553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #test 3
>>> mail from: <spamtest@localhost>
<<< 250 ok
>>> rcpt to: <[email protected]>
<<< 553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #Test 4
>>> mail from: <spamtest>
<<< 250 ok
>>> rcpt to: <[email protected]>
<<< 553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #Test 5
>>> mail from: <>
<<< 250 ok
>>> rcpt to: <[email protected]>
<<< 553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #Test 6
>>> mail from: <[email protected]>
<<< 250 ok
>>> rcpt to: <[email protected]>
<<< 553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #Test 7
>>> mail from: <spamtest@[82.96.117.180]>
<<< 250 ok
>>> rcpt to: <[email protected]>
<<< 553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #Test 8
>>> mail from: <[email protected]>
<<< 250 ok
>>> rcpt to: <nobody%[email protected]>
<<< 553 we don't relay (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #Test 9
>>> mail from: <[email protected]>
<<< 250 ok
>>> rcpt to: <nobody%mail-abuse.org@[82.96.117.180]>
<<< 553 we don't relay (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #Test 10
>>> mail from: <[email protected]>
<<< 250 ok
>>> rcpt to: <"[email protected]">
<<< 553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #Test 11
>>> mail from: <[email protected]>
<<< 250 ok
>>> rcpt to: <"nobody%mail-abuse.org">
<<< 553 we don't relay (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #Test 12
>>> mail from: <spamtest@[82.96.117.180]>
<<< 250 ok
>>> rcpt to: <[email protected]@domain.tld">
<<< 553 we don't relay (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #Test 13
>>> mail from: <[email protected]>
<<< 250 ok
>>> rcpt to: <"[email protected]"@[82.96.117.180]>
<<< 553 we don't relay (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #Test 14
>>> mail from: <[email protected]>
<<< 250 ok
>>> rcpt to: <[email protected]@[82.96.117.180]>
<<< 553 we don't relay (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #Test 15
>>> mail from: <spamtest@[82.96.117.180]>
<<< 250 ok
>>> rcpt to: <@domain.tld:[email protected]>
<<< 553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #Test 16
>>> mail from: <[email protected]>
<<< 250 ok
>>> rcpt to: <@[82.96.117.180]:[email protected]>
<<< 553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #Test 17
>>> mail from: <spamtest@[82.96.117.180]>
<<< 250 ok
>>> rcpt to: <mail-abuse.org!nobody>
<<< 553 we don't relay (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #test 18
>>> mail from: <[email protected]>
<<< 250 ok
>>> rcpt to: <mail-abuse.org!nobody@[82.96.117.180]>
<<< 553 we don't relay (#5.7.1)
>>> rset
<<< 250 flushed
:Relay test: #test 19
>>> mail from: <[email protected]>
<<< 250 ok
>>> rcpt to: <[email protected]>
<<< 553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)
>>> rset
<<< 250 flushed
>>> QUIT
<<< 221 domain.tld
Tested host banner: 220 domain.tld ESMTP
System appeared to reject relay attempts
Connection closed by foreign host.