[Exim] Directors question

Is there any possibilities in exim configuration file to detect from
where we received e-mail: from local machine (web interface, that
sends mail thru exim's sendmail wrapper), or from remote mailer thru
smtp session ?
I need to detect this way and if mails comes from sendmail program,
then skip some directors (that I use for verification of user's mailbox
status - closed, admistratively_closed, over quota or not exist)
Any ideas ?