[imp] IMP 3.x is good for work with Redhat 7.x ONLY ???

[EdwardSPL@ita.org.mo]

Have you ever installed IMP 3.1 under RedHat 6.2 system ?
I found after installed IMP 3.1 under RedHat 6.2, the language feature doesn't
work and can't connect to mail server by pop3 protocol...

I have ever visited :

ftp://ftp.horde.org/pub/SRPMS/rh6/horde-latest.README

4)  Horde/IMP RPMs

    NOTE:  "horde-phplib-storage" is not an RPM, it's a symbolic
    dependency.  It is satisfied by installing horde-mysql, horde-pgsql,
    or horde-shm, below.

    ftp://ftp.horde.org/pub/RPMS/i386/

        horde-1.2.8-1rh6
        horde-mysql-1.2.8-1rh6         (to use MySQL for PHPLIB)
        horde-pgsql-1.2.8-1rh6         (to use PostgreSQL for PHPLIB)
        horde-shm-1.2.8-1rh6           (to use shared memory for PHPLIB)
        imp-2.2.8-1rh6

    (You only install ONE of horde-mysql, horde-pgsql, etc., depending
    on where you want PHPLIB session data stored.)

Don't forget to follow the instructions these RPMs print out; you need
to create the MySQL or PostgreSQL database tables, change the database
password, etc.

ftp://ftp.horde.org/pub/SRPMS/rh7/horde-latest.README

8)  Horde RPMs

    The Horde RPMs have been tested with Red Hat 7.1, 7.2, and 7.3 (they
    should work fine with Red Hat 7.0) and with MySQL and PostgreSQL;
    additional testing and comments always welcome.  These RPMs can be
    downloaded from the Horde FTP site:

        ftp://ftp.horde.org/pub/RPMS/noarch/rh7/

    Red Hat 7.x
    ===========
    horde-2.1-2
    imp-3.1-2
    kronolith-1.0-2
    turba-1.1-2

    YOU WILL NEED TO RESTART Apache after you install/upgrade/remove the
    above RPMs.

    After installing these RPMs, you will need to configure Horde and
    the applications (config directories), create MySQL or PostgreSQL
    database tables if needed, etc.  Please see the docs/INSTALL file
    for each application (/var/www/html/horde/docs/INSTALL etc.).

So, does the description means imp 2.x good for work with RH 6.x, BUT imp 3.x
good for work with RH 7.x, right ?

Thank for your help !