BlockSpoofing

[muhammadaz]

Hello

We have cisco email security C190 appliance we want to block or reject any mail coming from internet

which as our SMTP domain in sender email ID, suppose we have our SMTP domain is "mydomain.com"

so any incoming mails from internet which has sender email ID with my SMTP domain "mydomain.com"

should be reject or block

Thanks

[Libin Varghese]

You can refer to the below article on how to create filter to block spoofed emails for a particular domain.

https://www.cisco.com/c/en/us/support/docs/security/email-security-appliance/117796-problemsolution-esa-00.html

The domain can be checked on the envelope sender (mail-from) and the friendly from header (from) depending on your requirement, and this can be accomplished using message or content filters.

Regards,

Libin Varghese