Mailing List SIMS@mail.stalker.com Message #10148
From: Technical Support <support@stalker.com>
Subject: Re: Why do quotes let you relay?
Date: Sat, 02 Feb 2002 13:43:32 +0300
To: (SIMS Discussions) <SIMS@mail.stalker.com>
Hello, on 02.02.2002 05:30, Joe Wagner at joew@cdr.stanford.edu wrote:

> Hi all,
> Just for fun, I ran abuse.net's test on one of my servers and saw something
> strange:
> Putting double quotes around the RCPT address,  RCPT
> TO:<"relaytest@abuse.net">,
> made the server _NOT_ send a 571 we do not relay error. Why is that?  Below is
> the
> website log showing the test, and then the mail server (SIMS ppc 1.8b8) log.
>
> Confused a Friday afternoon...

The quoted address was accepted as a name of account (it's not parsed and no
relay will take place.) Apparently, you have created the account Unknown in
your server - that account caught that address.


> Joe
>
> ps relay for clients only is of course checked.
>
> --test page from http://www.abuse.net/cgi-bin/relaytest --
> Relay test 7
>>>> RSET
> <<< 250 SMTP state reset
>>>> MAIL FROM:<spamtest@[66.88.123.234]>
> <<< 250 <spamtest@[66.88.123.234]> sender accepted
>>>> RCPT TO:<relaytest%abuse.net@cnc.net>
> <<< 571 <relaytest%abuse.net@cnc.net> we do not relay.
> Relay test 8
>>>> RSET
> <<< 250 SMTP state reset
>>>> MAIL FROM:<spamtest@[66.88.123.234]>
> <<< 250 <spamtest@[66.88.123.234]> sender accepted
>>>> RCPT TO:<"relaytest@abuse.net">
> <<< 250 <"relaytest@abuse.net"> recipient accepted
>
> --mailserver log--
>
> 18:08:36 4 SMTP-117(www.abuse.net) Input Line: RSET\r
> 18:08:36 4 SMTP-117(www.abuse.net) Sending 250 SMTP state reset\r\n
> 18:08:36 4 SMTP-117(www.abuse.net) Input Line: MAIL
> FROM:<spamtest@[66.88.123.234]>\r
> 18:08:36 4 SMTP-117(www.abuse.net) Sending 250 <spamtest@[66.88.123.234]>
> sender accepted\r\n
> 18:08:36 4 SMTP-117(www.abuse.net) Input Line: RCPT
> TO:<relaytest%abuse.net@cnc.net>\r
> 18:08:36 4 SMTP-117(www.abuse.net) Looking for invincible.cnchost.com
> 18:08:36 1 SMTP-117(www.abuse.net) SPAM? Recipient
> '<relaytest%abuse.net@cnc.net>' rejected: relaying to [207.155.248.15] is not
> allowed
> 18:08:36 4 SMTP-117(www.abuse.net) Sending 571 <relaytest%abuse.net@cnc.net>
> we do not relay.\r\n
> 18:08:37 4 SMTP-117(www.abuse.net) Input Line: RSET\r
> 18:08:37 4 SMTP-117(www.abuse.net) Sending 250 SMTP state reset\r\n
> 18:08:37 4 SMTP-117(www.abuse.net) Input Line: MAIL
> FROM:<spamtest@[66.88.123.234]>\r
> 18:08:37 4 SMTP-117(www.abuse.net) Sending 250 <spamtest@[66.88.123.234]>
> sender accepted\r\n
> 18:08:37 4 SMTP-117(www.abuse.net) Input Line: RCPT
> TO:<"relaytest@abuse.net">\r
> 18:08:37 4 SMTP-117(www.abuse.net) Sending 250 <"relaytest@abuse.net">
> recipient accepted\r\n
> 18:08:38 4 SMTP-117(www.abuse.net) Input Stream ended
> 18

--
Best regards,
Dmitry Akindinov

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