I was stuck with this for the last 2 days, you're a life saver! Wish the maintainers would take your comments into practice and re-release the packages as it is indeed far too complicated and virtually undocumented. The thing I was stuck on is I saw smtp.conf on various sites and created mine in /etc/postfix/sasl, but it was smtpd.conf, doh! :) Anyway, thanks a gain, Roman