Posted on Sun, 05/06/2012 - 11:52
Install the following packages: cyrus-sasl, cyrus-sasl-lib, cyrus-sasl-plain
Add the following lines to your Postfix main.cf file:
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
smtpd_sasl_authenticated_header = yes
broken_sasl_auth_clients = yes
smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination
Reload Postfix Enable smtp authentication in your mail client and try to send an email