I'm running ISPConfig 2.2.13 on Debian Etch. I was recently assigned the task of enabling SMTP AUTH on this machine. It looks like SASL is already installed. I've worked through the "Perfect Setup" steps at http://www.howtoforge.com/perfect_setup_debian_etch_p5 and am now testing my auth mechanism. I'm using testsaslauthd and not getting what I expect. Specifically,I'm using: testsaslauthd -u firstname.lastname@example.org -p mypass -f /var/spopostfix/var/run/saslauthd/mux which is returning: 0: NO "authentication failed" The user name and password I'm using are working just fine when I telnet to port 110. When I look in /var/log/auth.log I see: Jan 8 08:56:29 gx saslauthd: do_auth : auth failure: [service=imap] [realm=] [mech=pam] [reason=PAM auth error] Suggestions? Do I maybe have to do something with a file under /etc/pam.d?