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
