Please follow the Gentoo install guide found at:

    https://wiki.gentoo.org/wiki/Request_Tracker

Your local config files are located here:

    ${VHOST_ROOT}/${PN}-${PVR}/etc

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*    NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE    *
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Some file locations have changed. Everything is now installed, for real
this time, into:

    ${VHOST_ROOT}

RT executables are no longer in /usr/bin. You may need to modify your
existing configuration files accordingly.