Author: Jason Gunthorpe Date: To: Philip Hazel CC: John Horne, exim-users Subject: RE: [Exim] Opinions sought on new ignore_hosts option
On Tue, 15 Aug 2000, Philip Hazel wrote:
> None of these are relevant to the proposed new option, which will apply
> only when a host name is looked up to find its IP addresses *for routing*.
> The option will be a generic router option.
Hm.. From a security viewpoint it would be good to say 'drop 172.16.*
unless the domain being looked up is myprivatelan.com' that way DNS abuse
cannot be used to send SMTP to arbitary internal machines.
