Been blacklisted >_< Was: Re:Is this spam coming from inside my network?

[G. Matthew Rice]

Madison Kelly <linux-5ZoueyuiTZhBDgjK7y7TUQ at public.gmane.org> writes:
>    How could I check to see if I am an open relay? I've tried sending mail
>    through that server (mail.tle-bu.org is an actual server on it) and I
>    didn't authenticate from home (good thing). That was a pretty simple test
>    though; do you have any more advanced things I could try in order to
>    figure out what happened/is happening?

Try this:

        telnet ipaddr smtp
        ehlo somedomain.com
        mail from:<some address>
        rcpt to:<some other address>
        data
        Subject: some subject
        From: some address
        To: some other address

        test
        .
        quit

You can fiddle with somedomain.com, some address and some other address.  A
really good open relay doesn't even care if the mail from/ehlo commands are
even for a local domain.  As well, the mail from/rcpt to addresses don't have
to match the ones in the data.

I tried to do this for you but I get this:

    matt at brando:~$ telnet mail.tlu-bu.org smtp
    telnet: could not resolve mail.tlu-bu.org/smtp: Name or service not known

HTH,
-- 
g. matthew rice <matt-s/rLXaiAEBtBDgjK7y7TUQ at public.gmane.org>           starnix, toronto, ontario, ca
phone: 647.722.5301 x242                                  gpg id: EF9AAD20
http://www.starnix.com              professional linux services & products
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