On Mon, Mar 03, 2014 at 10:43:33PM +0100, Leonardo Boselli wrote:
> >Yes. Not common, definitely for an unusual use-case, but Exim can do
> >this.
>
> Maybe unusual, but people sending e/mail could have to do from
> places where the choice of the smtp server is restricted, so cannot
> affort a a normal authenthication, outside payload ...
So this not authentication of submission, but rather authentication
as an access control on permitted senders to the domain in question,
which only wants to receive email from specifically authorized
users? That is fairly unusual.
> >via ${run...} in the ACL hooked up to the DATA command, to be run after
> >"CRLF.CRLF" is received and before the response is sent.
>
> >If the volume of such mails is high enough, use a separate daemon to
> >handle the verification and use ${readsocket} to communicate with it.
>
> What is "high enough" ? expected traffic is about 3000 messages per
> day. maybe 300 in the peak hour.
This is very low.
--
Viktor.
