1) Add the following to /etc/postfix/main.cf: # 2008 Nov 8 smtp_generic_maps = hash:/etc/postfix/generic smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_type = cyrus smtp_sasl_security_options = noanonymous relayhost = [outgoing.yahoo.verizon.net] 2) Create /etc/postfix/generic [email protected] [email protected] [email protected] [email protected] @mars [email protected] @mars.example.com [email protected] 3) postmap /etc/postfix/generic 4) Create /etc/postfix/sasl_passwd outgoing.yahoo.verizon.net cllee1:[sub with password] 5) chmod 600 /etc/postfix/sasl_passwd 6) postmap /etc/postfix/sasl_passwd 7) invoke-rc.d postfix restart 8) vi /etc/aliases for root and cllee; newaliases 9) test r2r, r2c, c2c, c2r