Re: [exim] Blocking Users with No Reverse DNS

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Autor: Renaud Allard
Data:  
Para: Jim Pazarena
CC: exim-users
Asunto: Re: [exim] Blocking Users with No Reverse DNS


Jim Pazarena wrote:
> Michael Haardt wrote:


>
> I am seeing (for example):
> 2007-09-11 08:42:47 no IP address found for host reverse.154.51.184.66.static.ldmi.com
> (during SMTP connection from [66.184.51.154])
>
> I cannot find 'why / what' is generating this check and subsequent error message.
> I _do_ have tcp_wrappers running, but even wrappers, doesn't seem to generate this message.
>
> Can someone advise what I have configured to have generated this?
>


You have something like helo_try_verify_hosts and

It seems the host HELOed with reverse.154.51.184.66.static.ldmi.com,
which is its PTR record:

nslookup 66.184.51.154
Server:        172.20.0.254
Address:    172.20.0.254#53


Non-authoritative answer:
154.51.184.66.in-addr.arpa    name = reverse.154.51.184.66.static.ldmi.com.



However, reverse.154.51.184.66.static.ldmi.com yields no results.

nslookup reverse.154.51.184.66.static.ldmi.com
Server:        172.20.0.254
Address:    172.20.0.254#53


** server can't find reverse.154.51.184.66.static.ldmi.com.eriador.org:
NXDOMAIN

So exim is just logging this