CNAME changes for Googlemail Apps, doesn't really work

[drumlover]

Hey guys,
I have a question.
I started using Google Apps for a non-profit organization which requires over 2000 users, and to be nice to my resources I decided to use GoogleMail, Apps...
So now there is a problem I have encountered.
When I try to create a new CNAME line for googleApps, it shows it in google, that it should work fine, but when I try to call upon the defined domain it won't work...
Anybody can help?
Here's my bind file out of the dir /etc/ispcp/bind/

Code:

$TTL 86400
@    IN    SOA    ns.yfu-rheinland.de. root.yfu-rheinland.de. (
; dmn [yfu-rheinland.de] timestamp entry BEGIN.
             2007082601    
; dmn [yfu-rheinland.de] timestamp entry END.
            8H
            2H
            4W
            1D
)
        IN    NS    ns1.yfu-rheinland.de.
        IN    NS    ns2.hans.hosteurope.de.
        IN    MX    1 ASPMX.L.GOOGLE.COM.
        IN    MX    5 ALT1.ASPMX.L.GOOGLE.COM.
        IN    MX    5 ALT2.ASPMX.L.GOOGLE.COM.
        IN    MX    10 ASPMX2.GOOGLEMAIL.COM.
        IN    MX    10 ASPMX3.GOOGLEMAIL.COM.
        IN    MX    10 ASPMX4.GOOGLEMAIL.COM.
        IN    MX    10 ASPMX5.GOOGLEMAIL.COM.

yfu-rheinland.de.    IN    A    87.230.35.102
yfu-rheinland.de.    IN    TXT    "v=spf1 a mx ip4:87.230.35.102 ~all"
ns1        IN    A    87.230.35.102
ns2        IN    A    80.237.128.10
mail        IN    A    87.230.35.102
localhost    IN    A    127.0.0.1
www        CNAME    yfu-rheinland.de.
ftp        CNAME    yfu-rheinland.de.
gmail        CNAME    ghs.google.com
; sub [webmail.yfu-rheinland.de] entry BEGIN.
webmail.yfu-rheinland.de.                IN    A    87.230.35.102
www.webmail.yfu-rheinland.de.            IN    A    87.230.35.102
ftp.webmail.yfu-rheinland.de.            IN    A    87.230.35.102
localhost.webmail.yfu-rheinland.de.    IN    A    127.0.0.1
; sub [webmail.yfu-rheinland.de] entry END.

; sub [{SUB_NAME}] entry BEGIN.
; sub [{SUB_NAME}] entry END.

Thx.
drumlover
*edit*
The part is where I try to put gmail to ghs.google.com