[Pkg-exim4-users] how to reject mails when Reverse DNS check fails?

Hans Ekbrand
2011-09-17T20:36:21Z

On Mon, Sep 12, 2011 at 08:27:19AM +0200, Johann Spies
wrote:
> Hallo Hans,
>
>
> On Sat, Sep 10, 2011 at 01:08:41PM +0200, Hans Ekbrand wrote:
> > Dear exim users,
> >
> > I want to reject mail when Reverse DNS lookup fails, currently I only
> > get a warning - like this:
> >
> > X-Host-Lookup-Failed: Reverse DNS lookup failed for 203.211.146.24
(failed)
> >
> > I have
> > CHECK_RCPT_REVERSE_DNS = yes
> > CHECK_RCPT_SPF = yes
> >
> > in /etc/exim4/conf.d/main/00_local_options
> >
> > How do I configure exim to reject instead of warn?
>
> I did this to find the answer:
>
> % sudo rgrep CHECK_RCPT_REVERSE_DNS /etc/exim4
> /etc/exim4/exim4.conf.template:  .ifdef CHECK_RCPT_REVERSE_DNS
> /etc/exim4/conf.d/acl/30_exim4-config_check_rcpt:  .ifdef
> CHECK_RCPT_REVERSE_DNS
> % vim /etc/exim4/conf.d/acl/30_exim4-config_check_rcpt
>
> You can change the ''warn'' in the section where
CHECK_RCPT_REVERSE_DNS is
> used to ''deny''

Thanks, Johann and Akihiro!