Re: [Exim] How to require verification of sender conditional…

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Author: Philip Hazel
Date:  
To: Wakko Warner
CC: Eli, exim-users
Subject: Re: [Exim] How to require verification of sender conditionally in ACL?
On Tue, 23 Dec 2003, Wakko Warner wrote:

> Use this:
>    deny    !authenticated = *
>        !verify = sender


One way of thinking about these things is "horizontal = OR,
vertical = AND". Thus:

hosts = a : b : c

means "a OR b OR c", whereas the above example means "not authenticated
AND not sender verified". Similarly

deny dnslists = a : b : c

means "deny if host is on (black) list a OR list b OR list c", whereas

   deny   dnslists = a
          dnslists = b
          dnslists = c


means "deny if host is on list a AND list b AND list c.

(Just in case this helps.)

--
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.
Get the Exim 4 book:    http://www.uit.co.uk/exim-book