Re: [exim] making my HELO = my RDNS

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Author: Marc Perkel
Date:  
To: Mike Cardwell
CC: exim-users
Subject: Re: [exim] making my HELO = my RDNS


Mike Cardwell wrote:
> * on the Wed, Dec 06, 2006 at 01:09:14PM -0500, Anthony de Boer wrote:
>
>
>>>> Is there a simple way to set my HELO to be the same as my RDNS?
>>>>
>>> 1. Check your reverse DNS with lookup dnsdb
>>> 2. Set it with helo_data in your remote smtp transport.
>>> 3. ???
>>> 4. Profit!
>>>
>> Fairly simple so long as the box has only one Internet-facing IP
>> address and it has stable reverse DNS.
>>
>
> I already do what was described above. My remote_smtp router:
>
> remote_smtp:
>    debug_print        = "T: remote_smtp for $local_part@$domain"
>    driver             = smtp
>    helo_data          = ${lookup dnsdb{defer_never,ptr=$interface_address}{$value}{$primary_hostname}}
>    interface          = $interface_address

>
> It falls back to using the value of primary_hostname if the dns
> lookup fails.
>
> I do this to handle different 'suppliers' that sit on different
> interfaces that want different welcome messages, helo's, received
> headers etc etc.
>
> Mike
>
>


Mike - THANKS! That's what I was looking for.