- /etc/mail/sendmail.cf exists, no /etc/sendmail.cf
- /etc/mail/sendmail.cf exists, /etc/sendmail.cf same content as
/etc/mail/sendmail.cf
die in other cases. PR 10243.
- sendmail configuration files are in /etc/mail, not /etc.
- src/etc/aliases will be installed into /etc/mail/aliases (confusing)
- rc.d/sendmail warns if /etc/sendmail.cf exists.