Am 18.01.2012 17:36, schrieb Jon August: > Hi, > > We have a postfix machine setup as described here: > http://www.howtoforge.com/virtual-users-and-domains-with-postfix-courier-mysql-and-squirrelmail-ubuntu-11.10 > > and we would like to use a third party to do our spam filtering. So, we'd > like to continue using the machine for authenticated outbound mail, but we > want to limit the inbound mail to the third party mail server. How do we > configure postfix to do this? > > Outbound: > -------------- > ANY IP (authenticated) -> Postfix -> The World! (OK) > > Inbound: > ------------ > A.B.C.D -> Postfix (OK) > Anything else -> Postfix (DENIED) > > Thank you for your help.
* add the ip to "mynetworks" * add "smtpd_sasl_auth_enable=yes,permit_sasl_authenticated,permit_mynetworks,reject" in master.cf
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