> -----Original Message-----
> From: exim-users-bounces@??? [mailto:exim-users-bounces@exim.org]On
> Behalf Of R.B. (Rick)
> Sent: Thursday, December 30, 2004 9:56 AM
> To: exim-users@???
> Subject: Re: [exim] temporarily rejected RCPT from my ISP relay MTAs
>
>
> Rick Cooper wrote:
>
> >
> >
> >>-----Original Message-----
> >>From: exim-users-bounces@??? [mailto:exim-users-bounces@exim.org]On
> >>Behalf Of R.B. (Rick)
> >>Sent: Thursday, December 30, 2004 8:34 AM
> >>To: exim-users@???
> >>Subject: [exim] temporarily rejected RCPT from my ISP relay MTAs
> >>
> >>
> >>Hi all,
> >>i've a problem with ISP MTAs... i have thousand of these logs line per
> >>minute:
> >>
> >>2004-12-30 14:25:20 H=(big-1c.inet.it) [213.92.5.8]
> >>F=<qjgehyk@???> temporarily rejected RCPT
> >><hatbox@???>: Could not complete sender verify
> >>2004-12-30 14:25:20 H=(fe-3a.inet.it) [213.92.5.105]
> >>F=<czamjneafa@???> temporarily rejected RCPT
> >><etnean@???>: Could not complete sender verify
> >>2004-12-30 14:25:20 H=(big-1c.inet.it) [213.92.5.8]
> >>F=<qjgehyk@???> temporarily rejected RCPT
> >><armys@???>: Could not complete sender verify
> >>2004-12-30 14:25:20 H=(fe-3a.inet.it) [213.92.5.105]
> >>F=<czamjneafa@???> temporarily rejected RCPT
> >><bair@???>: Could not complete sender verify
> >>2004-12-30 14:25:20 H=(fe-3a.inet.it) [213.92.5.105]
> >>F=<czamjneafa@???> temporarily rejected RCPT
> >><adlewis@???>: Could not complete sender verify
> >>2004-12-30 14:25:20 H=(fe-3a.inet.it) [213.92.5.105]
> >>F=<czamjneafa@???> temporarily rejected RCPT
> >><araiva@???>: Could not complete sender verify
> >>
> >>This, i think, is due to spammers that send directly to secondary MXs...
> >>how can i avoid to respond temporarily reject on DNS problems and return
> >>instead a permanent error?
> >>
> >>
> >>
> >
> >Well the first thing I see:
> >The mx records for buffymail.com point to nullmx.domainmanager.com which
> >resolves to 0.0.0.0
> >
> >The mx records for passengers.com point to localhost.fabulous.com which
> >resolves to 127.0.0.1
> >
> >both of which are invalid and exim will never be able to verify sender. I
> >also noted that the helo host is listed as a free mail server, which may
> >well explain why you are having troubles with mail originating
> from there.
> >
> >Are these thousands of lines from same/similar email addresses and/or the
> >same .inet.it?
> >
> >Rick
> >
> >
> >
> >
>
> Are always from .inet.it (my secondary MXs....)...
> I think that they take that msgs in queue because i respond a temporary
> error (rightly...)...and i would respond with a permanent error instead.
>
Check your dnslookup: router and make sure the following two lines are
there (probably on the very end of the router), if not add them.
ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8
no_more
this should cause Exim to consider the 0.0.0 and 127.0.0.0/8 addresses as
non existent and return a permanent error for those types of addresses.
You can test this by issuing the command:
exim -C /PathToYour/eximin.conf -bt czamjneafa@???
and you should get something like:
czamjneafa@??? is undeliverable:
all relevant MX records point to non-existent hosts
Rick
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