getting to stop spam with sendmail

ODHIAMBO Washington wash at
Tue Jun 17 00:06:43 PDT 2003

* David Banning <david at> [20030617 09:52]: wrote:
> I am interested in getting my server to bounce mail from open relays.
> I have been to the site. I have added the suggested line
> to my mc files;
> FEATURE(`dnsbl', `', ` "550 Email rejected due to sending server
> misconfiguration - see\#why_rejected"')dnl
> I am using sendmail 8.12.9/8.12.6
> I of course recompiled the .mc files, and restarted sendmail.
> I have tried to test that it is working by adding;
> to my /etc/hosts file, as my ip address is
> I am still not getting a bounce. I am not seeing anything in /var/maillog
> I am looking for a clue as to how to get more info to get this working,
> either via a tip from someone, or how I can crank up my logging
> to maillog to give me more info. A website that goes into
> more depth would be helpful, if anyone knows one. 

I believe the ordb dnslists are not free anymore, but that is upto you to
go and find out. Perhaps you already did.
I use the following dnslists: : : \ : : \ : :

I use Exim, not Sendmail, so I do not know how to test, but suppose
you have a different box, you can temporarily assign the IP to it, then

telnet -s ip_of_sendmail_box 25

Then simulate a mail transaction and see what the sendmail says in the log...


Odhiambo Washington   <wash at>  "The box said 'Requires
Wananchi Online Ltd.      Windows 95, NT, or better,'
Tel: +254 2 313985-9  +254 2 313922         so I installed FreeBSD."   
GSM: +254 72 743223   +254 733 744121       This sig is McQ!  :-)

	A man who was born at least 5,000 years ahead of his time.

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