how your block incoming email from a particular domain or email?
understanding of the function:
1. Reject Servers Without RDNS Names?
2. Reject IP Address In Servers With RDNS Names?
3. Reject Messages From Server Without MX Records?
4. Reject Servers With Names RDNS Not Resolving To IP?
5. Separated Space RBL DNS Servers?
thanks for the advice to be given
step by step please
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imean