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 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
>
>
>

My problem isn't in outbound but in inbound.... i would like to respond
a permanent error during SMTP dialogue... is possible?
Thanks