need help blocking emails to non-existent users

[Andrews Carl 455]

I used getadsmtp.pl
(http://www-personal.umich.edu/~malth/gaptuning/postfix/). I had to
modify it and use it with a shell script to create my access/access.db
but it works great.
 
Using the getadsmtp.pl I am creating and /etc/mail/access file 
 
To:<emailaddress>    OK
...
..
..
..
<domain>    ERROR:User unknown in local recipient table
 
then, /usr/sbin/makemap hash /etc/mail/access.db < /etc/mail/access
 
The last line tells sendmail to reject anything for that domain that it
does not already know about
 
 
You will have to add these to sendmail.mc and rebuild sendmail.cf
FEATURE(`delay_checks`,`friend', `n')dnl    ' you could use hater, just
not both
FEATURE(`blacklist_recipients')dnl
 
I am not 100% certain you need both of these but delay_checks is a
definite.
 
Thanks,
Carl
 

	-----Original Message-----
	From: mailscanner-bounces at lists.mailscanner.info
[mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Joey
Marino
	Sent: Wednesday, December 19, 2007 4:02 PM
	To: mailscanner at lists.mailscanner.info
	Subject: need help blocking emails to non-existent users
	
	
	I am currently running a mailscanner box on centos using
sendmail that relays to my exchange server.  I am trying to block email
to non-existent users at the smtp level on the MX. I understand I have
to somehow update sendmail with existent users in the active directory
possibly using ldap. I can't seem to find any good documentation on how
to do this. Many entries in the archive point to
http://www.mailscanner.info/serve/cache/270.html but this doesn't exist
anymore. I also found a sketchy bash script at
http://the-jer.spaces.live.com/blog/cns!E4FBBD09FA146AF!128.entry but I
don't like this approach either. I want to do all the work on the
gateway. Can somebody point me to some good documentation or a healthy
script that I could use to accomplish this? 
	
	-- 
	Joey Marino 

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