I don't know if this is relevant, but you can compile sendmail with or without the mbox USE flag - I think that that determines whether mail goes to maildir or not:
equery uses sendmail [ Searching for packages matching sendmail... ] [ Colour Code : set unset ] [ Legend : Left column (U) - USE flags from make.conf ] [ : Right column (I) - USE flags packages was installed with ] [ Found these USE variables for mail-mta/sendmail-8.13.1-r1 ] U I + + ssl : Adds support for Secure Socket Layer connections + + ldap : Adds LDAP support (Lightweight Directory Access Protocol) - - sasl : Adds support for the Simple Authentication and Security Layer + + tcpd : Adds support for TCP wrappers - - mbox : Adds support for mbox (/var/spool/mail) style mail spools + + milter : Adds sendmail mail filter (milter) support - - mailwrapper : Adds mailwrapper support to allow multiple MTAs to be installed - - ipv6 : Adds support for IP version 6 -- gentoo-user@gentoo.org mailing list
