Okay, I give up. I can't figure this one out. I followed the guide here http://howtoforge.net/postfix_mysql_dovecot_dspam_clamav_postgrey_rbl_debian_etch and I'm at the point now that postfix is setup and tunneling mail to dspam which in turn checks it out and attempts to run /usr/lib/dovecot/deliver on it -- but here's the problem. Every time I send a mock-mail (using mutt) the follow shows up via stdout (no idea why it's not in any log, but it's not): Code: Usage: deliver [-c <config file>] [-d <destination user>] [-m <mailbox>] [-f <envelope sender>] Fatal: Unknown argument: -d Which refers to the command in this mail.log / mail.err message: Code: May 11 05:01:43 postman dspam: Delivery agent returned exit code 64: /usr/lib/dovecot/deliver -d email@example.com spam Somehow, " spam" is getting appended to the end of the line, which I don't see as possible since this is the dspam.conf configuration: Code: [...] TrustedDeliveryAgent "/usr/libexec/dovecot/deliver -d %u" [...] UntrustedDeliveryAgent "/usr/libexec/dovecot/deliver -d %u" [...] QuarantineAgent "/usr/libexec/dovecot/deliver -d %u -m SPAM" So I am totally stumped. I even setup dspam to Opt In, thinking that it would call the TrustedDeliveryAgent every time. If this is the case, where on earth could this "spam" line get tacked on? I have been trying to debug this for hours and I am at a complete loss. EDIT: Here it is again, in /var/log/dspam/dspam.debug Code: [...] 17535: [05/11/2008 05:01:43] using /var/spool/dspam/opt-in/bob.com/bob.dspam as path 17535: [05/11/2008 05:01:43] using /var/spool/dspam/opt-out/bob.com/bob.nodspam as path 17535: [05/11/2008 05:01:43] Opening pipe to LDA: /usr/lib/dovecot/deliver -d firstname.lastname@example.org spam 17535: [05/11/2008 05:01:43] DSPAM Instance Shutdown. Exit Code: 0 What on earth is going on here?! EDIT 2: If I change to TrustedDeliveryAgent "/usr/libexec/dovecot/deliver", as expected, I get Fatal: Unknown argument: spam. Why this extra string is getting tacked onto the LDA call is far beyond me.