Quoting eximmail (eximmail@???):
> Pointers on how to do this would be greatly appreciated.
In acl_smtp_rcpt:
deny condition = ${lookup{$sender_address}wildlsearch{/etc/exim4/blacklists/sender_domains}{yes}{no}}
message = Sending address ($sender_address) is blacklisted for domain $domain
In /etc/exim4/blacklists/sender_domains put entries like:
*@spamdomain.tld
yourenemy@???
... etc
-Sndr.
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