Thanks Clifton, I agree that we need a *way* to stop the NDR from mailer daemon, at present I have 11155 requests pending in the mail queue from Mailer Daemon.
I have done some testing re option #2 below, it seems that MS Exchange 2003 does not 'reject non-existent user' upon probing hence I have to cross this out (unless I'm wrong on this). I tested this by doing a few test injections to the Exchange server and all invalid recipients were simply accepted by exchange smtp. Option #1 is feasible, I have done some googling and noticed there 2 ways to do this, active vs passive where active is to get the exhcnage query the AD and passive is where you regularly do a full export of the email addresses in AD and feed them into postfix. I'm testing the 'active' at present. Thanks for your input. CP Subject: Re: [AMaViS-user] Amavis bottleneck? Date: Mon, Jun 23, 2008 at 01:41:26PM -1000 Quoting Clifton Royston ([EMAIL PROTECTED]): : You will greatly ease your load, and avoid belaboring other Internet : domains with bounces, if you enhance your Postfix configuration to : reject known non-deliverable addresses. : : There are two basic approaches to doing this with Exchange: : : 1) install an LDAP client on your Postfix server, and configure LDAP to : validate users against the Active Directory, as Exchange is probably : doing. See : <http://www.postfix.org/LDAP_README.html> : <http://readlist.com/lists/postfix.org/postfix-users/7/36237.html> : for a quick overview. : : 2) use the Postfix recipient verification hooks to verify recipients : directly against the Exchange server before accepting them. See : <http://www.postfix.org/ADDRESS_VERIFICATION_README.html#recipient> : for an introduction. : : Consult the postfix-users list if you need more help with either : approach. : : This still doesn't explain why your amavisd is running slow, but it : will cut your incoming load and queue size at least in half, make you a : less attractive target to spammers, and make your site a better : Netizen. Big win. : : -- Clifton : : -- : Clifton Royston -- [EMAIL PROTECTED] / [EMAIL PROTECTED] : President - I and I Computing * http://www.iandicomputing.com/ : Custom programming, network design, systems and network consulting services : : ------------------------------------------------------------------------- : Check out the new SourceForge.net Marketplace. : It's the best place to buy or sell services for : just about anything Open Source. : http://sourceforge.net/services/buy/index.php : _______________________________________________ : AMaViS-user mailing list : [email protected] : https://lists.sourceforge.net/lists/listinfo/amavis-user : AMaViS-FAQ:http://www.amavis.org/amavis-faq.php3 : AMaViS-HowTos:http://www.amavis.org/howto/ ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ AMaViS-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/amavis-user AMaViS-FAQ:http://www.amavis.org/amavis-faq.php3 AMaViS-HowTos:http://www.amavis.org/howto/
