[V. T. Mueller]
> *Is there a way to also check if the term in brackets (sending.dom)
> matches a given pattern?*
Yes -- open for relaying from the subnet(s) the connection will
originate from, and then use the system-wide message filter to block
all relaying from the(se) subnet(s) without the appropriate
$sender_helo_name.
It's bound to be pretty hairy stuff, though :)
--
Harald
--
*** Exim information can be found at
http://www.exim.org/ ***