Author: Nico Erfurth Date: To: everton CC: exim-users Subject: Re: [Exim] Detecting and routing locally generated messages
Nico Erfurth wrote: > Everton da Silva Marques wrote:
>
>> Hello.
>>
>>
>> According to section 3.4 of Exim 4 Specification [1], there
>> are 4 methods a locally running process can use to issue
>> a message to Exim:
>>
>> 1) -bm option
>> 2) -bS option
>> 3) -bs option
>> 4) TCP call to loopback address
>>
>> I would like to route those locally generated messages in a
>> specific way.
>>
>> QUESTION:
>>
>> How can one to reliably detect a locally generated
>> message (issued by a locally running process)? Is
>> it possible to write a router which handles only
>> messages received through one of those 4 methods?
>> Or, at least, through the first 3 three (which
>> don't involve TCP/IP) ?
>>
>> Any hints greatly appreciated.
>
>
> in conditions you could use $interface_address and $host_address
> they SHOULD be equal for commandline (empty strings) and local tcp
> connections (same ip)
>
> condition = ${if eq {$interface_address}{$host_address}{1}}
>
> this will not work in any case, if the client binds the outgoing
> connection to an specific ip and connects to another one (if you have
> virtual interfaces or something like that) the addresses will not be
> equal. But youc an use explicit checks for the addresses in suche a case.
>
> $host_address should be $sender_host_address, sorry
