PersonalI kept getting the error fileclass: cannot open '/etc/mail/local-host-names': Group writable directory. Editing sendmail.cf doesn't work like many sites recommended because you have to edit sendmail.mc.
How annoying though. Setting /etc/mail to chmod 744 or 444 doesn't work. Even setting everything recursively so that only the user has any permission still calls it a group writable directory. Sendmail is crazy and annoying to configure without issues.
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