manual
/usr/sbin/sendmail
mta-pam
/etc/pam.d/smtp
mta-mailq
/usr/bin/mailq
mta-newaliases
/usr/bin/newaliases
mta-rmail
/usr/bin/rmail
mta-rsmtp
/usr/bin/rsmtp
mta-runq
/usr/bin/runq
mta-sendmail
/usr/lib/sendmail
mta-mailqman
/usr/share/man/man1/mailq.1.gz

/usr/sbin/sendmail.exim
10 exim
/etc/pam.d/exim
/usr/bin/mailq.exim
/usr/bin/newaliases.exim
/usr/bin/rmail.exim
/usr/bin/rsmtp.exim
/usr/bin/runq.exim
/usr/lib/sendmail.exim
/usr/share/man/man8/exim.8.gz