What is the format for Allow/Deny list entries?
A Fully qualified email address somebody@domain.tld The localpart of an email address somebody@ A domain or sub-domain domain.tld A top level domain tld An IP address 1.2.3.4, 1.2.3.4/32 An IP address range in CIDR notation 1.2.3.0/24, 1.2.3.16/28, 1.2.0.0/16 Allow/Deny all * Allow list entries have precedence over Deny list entries. You can allow somebody@domain.tld and deny other sender addresses in domain.tld with a domain.tld Deny entry. The Allow/Deny list entries are applied to the envelope sender address and the SMTP client IP address. If the MX box is checked, the entry is applied at the MX servers. A Deny entry will reject the message. An Allow entry will bypass all MX restrictions. If the MX box is not checked, an Allow entry will bypass all spam scoring including the Bayes classifier but MX restrictions will still apply at the MX servers. A Deny entry is given a +50 score and headers and subject tag added if enabled.
