My server is sending mail over a smarthost, but receives mail directly
via SMTP. I would like to do sender verification with callouts when
receiving mails, but due to the default transport being a smarthost,
exim always tries to verify addresses by contacting the smarthost rather
than the MX of the address.
Is there a way to have Exim use the smarthost for ordinary mail, but do
direct connections to the MX when doing sender verification?
Thanks,
-Nikolaus
--
»Time flies like an arrow, fruit flies like a Banana.«