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Postfix/dovecot smtp auth implementation question

From: indio (indio_tripayahoo.com.ar)
Date: Tue Jul 28 2009 - 17:10:31 CDT


Hi all!
        With the config lines below, all clients from inside my network MUST authenticate to deliver a message. But all connections from the Internet where "mail from" is mydomain.com can deliver mail to local users without authenticate. What should I do to force authentication to ALL usersmydomain.com?

smtpd_sasl_authenticated_header = yes
broken_sasl_auth_client = yes
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
smtpd_recipient_restrictions = permit_mynetworks,permit_sasl_authenticated,reject_unauth_destination