I have followed the steps to a "T" only difference is I have used Centos 5.0/w updates. In the postfix logs I get the following errors. # Mar 6 09:12:48 smtp postfix/smtpd[11935]: sql_select option missing Mar 6 09:12:48 smtp postfix/smtpd[11935]: auxpropfunc error no mechanism available # I have done some searching but the results are pointing to cyrus-imapd. Any ideas from the users here?