Solved: Rejected by host access table unknown - domain bypass

Chris Richards · ‎08-25-2022

We are seeing a legitimate domain being rejected by Host Access Table with unknown. The end result the email is aborted. The sender maturity is on at 1 day but domain has been in use for 6 months.

What do I need to set to allow this specific domain through without being blocked?

The external IP is not possible as they are not using a static IP.

UdupiKrishna · ‎08-26-2022

I am assuming from the explanation it is possibly blocked by SDR. You can create a SDR exception by creating a domain name based address list and use it under SDR bypass.

https://www.cisco.com/c/en/us/support/docs/security/email-security-appliance/216192-configure-sender-domain-reputation-for-e.html - Refer to "Domain Exception list" section"

View solution in original post

UdupiKrishna · ‎08-26-2022

I am assuming from the explanation it is possibly blocked by SDR. You can create a SDR exception by creating a domain name based address list and use it under SDR bypass.

https://www.cisco.com/c/en/us/support/docs/security/email-security-appliance/216192-configure-sender-domain-reputation-for-e.html - Refer to "Domain Exception list" section"