LuxSci has supported restricting to whom users can send email messages for quite some time.  However, this implementation behaves like a “locked down allow list”.  I.e. you can set it up so that users can send only to a certain set of addresses and/or domains.  We have had several requests for a feature to allow users to send to anyone except certain addresses or domains (i.e. a recipient deny list).

LuxSci has updated the “Recipient Restriction” settings that can be configured on each domain so that administrators can choose to have any of the following:

• No restrictions
• Allow List Style – “Send only to these folks” restrictions
• Deny List Style – “Send to anyone but these folks” restrictions.

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