I just figured this out myself when the command failed. My $setgid_group is set to "postdrop" and $queue_directory set to "/var/spool/postfix".
I have ran "ls -ld" for those directories you specified -- [root~]# ls -ld /var/spool/postfix/maildrop/ drwx-wx---. 2 postfix postdrop 4096 Mar 18 10:57 /var/spool/postfix/maildrop/ [root@~]# ls -ld /var/spool/postfix/public drwxrwxrwx. 2 postfix postdrop 4096 Mar 18 10:56 /var/spool/postfix/public I also took your advice and configured /etc/selinux/config to set "SELinux" to "disabled" - rather than "enforcing" and rebooted the server. It now appears that the error is no longer appearing! I set the "pickup" process back to 60 (as recommended) and see the e-mails leaving almost instantly. I spoke with one of our Linux administrators and he advised that SELinux didn't even cross his mind because he's so used to disabling it on install. :P Thanks a ton for all of your help - Sahil, Viktor and Wietse! -- View this message in context: http://postfix.1071664.n5.nabble.com/20-40-second-delays-Is-this-normal-tp65951p66132.html Sent from the Postfix Users mailing list archive at Nabble.com.