Yes in fact it will be used as a relay, sorry I did not state that in my first mail.
This is perfect for what we need. Thank you !! -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Thursday, April 22, 2004 9:43 AM To: [EMAIL PROTECTED] Subject: RE: [Mimedefang] Bounce if its not for a local user. > From: Larry Guest [mailto:[EMAIL PROTECTED] > I would like to filter mail and bounce anything that is not > for a local user. > I assume I will have to setup a file on the server and list all the > valid users in this file. There are only about 50 at the most so this > is not a problem. > > Any ideas? Are the users local to the server? Or are you using the server as a relay? If the former, sendmail should already be doing this for you. If the latter, there are two options: You can use a mimedefang function check_against_smtp_server() to see if the user exists on the remote server. This works for *most* remote servers. If you're using an Exchange server, life is a little more complicated. (I know, I'm doing exactly this.) However, all hope is not lost. You can create a Perl script to run LDAP queries against your Exchange server every (say) fifteen minutes. The LDAP query can extract all valid email addresses. Then the Perl script should make a sendmail "access" file and hash it to access.db See http://lists.roaringpenguin.com/pipermail/mimedefang/2003-December/01863 3.ht ml for how to do it against an Exchange 2000 server It's also possible to do against an Exchange 5.5 server - I'm doing this (email me offlist for my script) This method has a drawback. Email to new addresses will be bounced until the Perl script has had a chance to run. So, if you create a new Exchange user, they won't be able to get email from the outside for up to fifteen minutes. In my experience, this is not a big problem at all. [EMAIL PROTECTED] 805.964.4554 x902 Hispanic Business Inc./HireDiversity.com Software Engineer perl -e"print join er,reverse',','l hack',' P','Just anoth'" _______________________________________________ Visit http://www.mimedefang.org and http://www.canit.ca MIMEDefang mailing list [EMAIL PROTECTED] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang _______________________________________________ Visit http://www.mimedefang.org and http://www.canit.ca MIMEDefang mailing list [EMAIL PROTECTED] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
