On Thu, 24 Oct 2002, Adam Henry wrote:
> Thanks, I understand now. So the host_lookup option is only to give
> information about the reverse DNS entry of sender IP addresses, not to
> deny at all. Even if host_lookup is unset, if there are host names in
> the host_reject variable, delivery will fail if the reverse lookup of
> those names fail.
Exim uses reverse lookup for wildcard host names. For complete names, it
uses forward lookup.
> Does 3.x have the ability to offer this
> functionality, or is this something that only 4.x's ACLs offer?
3.x has +allow_unknown
> I also would like to make sure I am not breaking any RFC by doing this.
> I will check over the relevant ones to see what they say.
RFCs say nothing about policy. That's up to you.
Philip
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
