--libexecdir=/usr/lib/courier: Specifies the directory which contains programs and libraries that cannot be directly executed from the command-line. --datadir=/usr/share/courier: Specifies the directory where miscellaneous shell scripts, Perl scripts, and data files will be installed. --localstatedir=/var/spool/courier: Specifies the directory that will hold the mail queue, and other temporary data. --with-piddir=/var/run/courier: Specifies the directory where Courier's PID files are stored when Courier is active. --disable-root-check: Allows Courier to be built as the root user. --with-mailuser=courier: All except two Courier daemons run as a non-privileged user. This option specifies the userid that Courier will install and run as. --with-mailgroup=courier: like --with-mailuser, but specifies the group ID. --with-paranoid-smtpext: Be paranoid when negotiating Courier-specific ESMTP extensions with remote servers. The Courier mail server defines and implements certain experimental ESMTP extensions: XVERP and XEXDATA. Problems may result in the event that someone else uses the same name to implement some other extension. If this option is specified, Courier's ESMTP server will also advertise a dummy ESMTP capability called XCOURIEREXTENSIONS, and will not recognize any Courier-specific extensions unless the remote mail server also advertises this dummy ESMTP capability. --disable-autorenamesent: Do not rename the Sent folder every month. This option can also be controlled by the SQWEBMAIL_AUTORENAMESENT environment variable. --enable-workarounds-for-imap-client-bugs: There are several confirmed bugs in some IMAP clients that do not properly implement the IMAP4rev1 protocol. This option enables some workarounds for those buggy IMAP clients. NOTE: make check will fail if this option is used. You should first configure without this option, and if all post-configuration tests succeed, rerun configure with this option and recompile. --with-db=gdbm: Courier requires either the GDBM or the DB database library. GDBM is used if both are present. This option forces the selection of the GDBM database library since support for DB is broken at the current state. --with-ispell=/usr/bin/aspell: Courier's webmail server can use spell checking, if configure finds ispell or if you explicitly set the location of aspell. --enable-mimetypes=[location of mime.types file]: Use this switch if you receive an error saying that the mime.types file could not be found.