[exim] Blocking non-existant Domain Names

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Autor: Craig Whitmore
Fecha:  
A: exim-users
Asunto: [exim] Blocking non-existant Domain Names
I've noticed that Exim accepts non-existant domain names in the mail from.

Has anyone an ACL which will block this? (ie if looking up a domain and
getting NXDOMAIN) to give a fail in the mail from acl (or similar)

Thanks
Craig