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Hello,
I'm going to create a CSR for the TLS encryption functionality. but MX record does not match the hostname of system or the listener interface.
1- Must CNAME and system hostname and listener interface hostname being match with the MX record ?.
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Thank you for your replies.
i read this article which confirm hostname should match MX record not A record.
https://www.cisco.com/c/en/us/support/docs/security/email-security-appliance/118844-technote-esa-00.html?utm_source=chatgpt.com
