sensible-mda-dbgsym 8.15.2-8ubuntu1 (amd64 binary) in ubuntu zesty

 Sensible-mda is a Debian addition in the sendmail package and has been
 split out in hopes that it might be useful for other MTA packages.
 .
 Sensible-mda is called by the MTA, and will in turn call whichever of
 the following MDAs that it finds (in this order):
 procmail, maildrop, deliver, mail.local