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How about a community, currently one of our clients asked us a question about which I have not found much information.
The client used the trend micro email gateway tool and yet changed to sophos, now he asks us how sophos can block domains or allow domains, that is, if I have the domain "company.com" that are only received from that domain and if they want to supplant the domain by "company.net" this is blocked, he lets us know that this is possible with the trend micro tool.
What options could I give you or how does sophos work in such incidents?