Debian – Postfix – Access list postxixi confis

So, if you are sure you want to block all mail to/from the list of domains, you can add the following directive to your postfix main.cf file:

Code:

smtpd_sender_restrictions = hash:/etc/postfix/access
reject_unauth_destination = hash:/etc/postfix/access

Once this has been added to the main.cf, you need to create the /etc/postfix/access file and put entries in it like this:

Code:

aol.com     REJECT
yahoo.com   REJECT
msn.com     REJECT

So on and so forth until all the domains have been entered. Once you have created this file and the permissions are correct run the following command:

Code:

postmap hash:/etc/postfix/access

and finally restart postfix.

This will prevent the offending domains from sending you mail and your users from sending mail to those domains.

**NOTE**I have used smtpd_sender_restrictions in past configurations, I have not used reject_unauth_destination, and based that portion of this reply on what I read on the postfix site. You may want to impliment each one seperately and test.