Question: what are the sendmail configuration files ?
Answer : Sendmail uses the following configuration files:
/etc/mail/access sendmail access database file
/etc/mail/aliases Mailbox aliases
/etc/mail/local-host-names Lists of hosts sendmail accepts mail for
/etc/mail/mailer.conf Mailer program configuration
/etc/mail/mailertable Mailer delivery table
/etc/mail/sendmail.cf sendmail master configuration file
/etc/mail/virtusertable Virtual users and domain tables