Hello, I have a need to whitelist a specific domain (and any subdomain thereof) such that some of Postfix's normal smtpd_recipient_restrictions are bypassed. In ISPConfig 3, I have gone into Email -> Global Filters -> Postfix Whitelist and created a new entry. In "Whitelist Address", I have *.example.com, and the "Type" is Recipient. (The Active box is checked, too, of course.) Two questions: 1.) Is *.example.com the correct notation to use for this? The Postfix documentation states: 2.) Is there any way to verify that this whitelist entry is actually effective? Everything seems to be in-place, but I need to be able to verify the behavior. Here's my current value for smtpd_recipient_restrictions: Code: smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, check_recipient_access mysql:/etc/postfix/mysql-virtual_recipient.cf, reject_sender_login_mismatch, reject_invalid_hostname, reject_non_fqdn_hostname, reject_non_fqdn_sender, reject_non_fqdn_recipient, reject_unknown_sender_domain, reject_unknown_recipient_domain, check_policy_service unix:private/policy-spf, check_policy_service inet:127.0.0.1:10023, reject_rbl_client zen.spamhaus.org, reject_rhsbl_helo dbl.spamhaus.org, reject_rhsbl_sender dbl.spamhaus.org check_recipient_access seems to be the relevant check here. I want to ensure that whitelisted senders are subjected to all of the normal checks, except for the three reject_ rules at the end. Should I move check_recipient_access down the list so that it's just above reject_rbl_client to achieve the desired result? Thanks for any assistance with this.