The way you have it setup now Sendmail accepts all mail before trying to deliver it via cyrus (just like most secondary and some primary mx servers do). So if I send 1000 emails to non existant users your sendmail will accept them all (regardless of weather they exist or not) before trying to deliver them to cyrus. Because I'm a spammer I've used fake return addresses so you now have 1000 bounces sitting in your mail queue (which Sendmail keeps trying to resend every hour)until they expire putting a strain on your resources.
Every time I have setup LDAP routing for a domain (primarily on the mx servers but also on the cyrus system) it has resulted in a 80% to 90% reduction in mail traffic and server load. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of AJ Sent: Thursday, 8 July 2004 8:21 AM To: [EMAIL PROTECTED] Subject: Re: Cyrus IMAP, sendmail and LDAP Thanks. I have reviewed the sendmail page numerous times, but my question is what is the difference between the way I have things set up now, i.e just using cyrus as a local mailer, as opposed to ldap_routing. I am not sure why one would go one way or the other, just trying to clarify. Thanks. AJ Andrzej Filip wrote: > AJ wrote: > >> My setup is cyrus, sendmail and openldap for all users data. >> The way I have things set up now is sendmail use cyrus local mailer, >> and is not compile w/ LDAP support, so if a mailbox does not exist in >> cyrus, it gets bounced. Sendmail does not do user/mailbox lookups >> via LDAP. >> This seems to work ok, but on the net I have been reading most people >> set up sendmail to look at ldap for users, rather than cyrus. >> Can some people share their setups on how they implement these three >> together? > > > * LDAP ROUTING (sendmail) > http://www.sendmail.org/m4/ldap_routing.html > * Autocreate INBOX patch for Cyrus > http://email.uoa.gr/projects/cyrus/autocreate/index.html > --- Cyrus Home Page: http://asg.web.cmu.edu/cyrus Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html --- Cyrus Home Page: http://asg.web.cmu.edu/cyrus Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
