Bug#270748: marked as done (exim4-config: "ignore private rfc1918 and APIPA addresses" causes problems)

[Andreas Metzler]

On 2004-09-09 Debian Bug Tracking System <owner@bugs.debian.org> wrote:
[...]
> On Wed, Sep 08, 2004 at 06:21:41PM -0700, Andrew Pimlott wrote:
> > I installed exim4 and exim4-config as an "internet site".  I just
> > found that I could not send mail within my local network, because
> > it refuses to connect to RFC 1918 hosts.

> Feature.
[...]
> > rather than a private network where these
> > addresses are perfectly valid.

> It does so to avoid delivering e-mail to misconfigured domains to the
> wrong place.
[...]


To elaborate a little bit more: This is also very useful for working
sender verification. - It is a rather common way to disable e-mail
delivery for domains by having an A-record pointing to private address
space. If ignore_target_host is not set exim will happily accept mail
with 'mail from: x@thisbrokendomain' but a bounce-message (if one was
generated) could not be delivered (no root to host) and would be
frozen, stuck in the queue. 
                   cu andreas
-- 
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