--On 26 December 2006 21:05:28 -0800 Marc Perkel <marc@???> wrote:
>
>
> Colin Keith wrote:
>> On Tue, Dec 26, 2006 at 06:44:37PM -0800, Marc Perkel wrote:
>>
>>> How would I do this in an ACL? I want to test to see if the IP of the
>>> interface that my server received the message on is the lowest MX record
>>> for the domain that it's being sent to.
>>>
>>
>> I don't think its possible within Exim itself. Part of the way could be
>> to get the MX via a dnsdb lookup, such as:
>>
>> ${lookup dnsdb{defer_lax,mx=$domain}{$value}fail}
>>
>>
>> but that doesn't allow you to order the output. Instead, maybe you could
>> use a shell script such as:
>>
>> # !/bin/sh
>> PATH="/bin:/usr/bin"
>> host -tmx $1 \
>> | grep 'handled by' \
>> | sort -nk6 \
>> | awk ' { print $7 } ' \
>> | head -1 \
>> | xargs host -ta \
>> | grep 'has address' \
>> | awk ' { print $4 } '
>>
>>
>> And then use a ${run} command to put this in your ACL:
>>
>> condition = ${if eq {$interface_address} \
>> {${run{/usr/exim/bin/lowest_mx
>> $domain}{$value}fail}} \ {yes}{no} }
>>
>> Not tested, but may be something to get you started.
>>
>> Colin.
>>
>
> There's a lot of sharp people in this list. I bet someone figures it out.
Does this comment indicate that you've not bothered to put any effort at
all into trying out Colin's solution?
--
Ian Eiloart
IT Services, University of Sussex
