error check sum

[Abdelkader Belahcene <abelahcene@gmail.com>]

Hi,

I install a mirror on my server  172.17.11.85 with apt-mirror

from a machine ( the server itself ), apt-get update works correctly
from another machine (remote machine), I got error on some directory and not in others , here is the output:

 OK:
Atteint ftp://172.17.11.85 jessie-backports/non-free Translation-en                               
Atteint ftp://172.17.11.85 jessie-updates/main i386 Packages              
Atteint ftp://172.17.11.85 jessie-updates/contrib i386 Packages           
Atteint ftp://172.17.11.85 jessie-updates/non-free i386 Packages 

ERROR:

                                 
W: Impossible de récupérer ftp://172.17.11.85/ftp.fr.debian.org/debian/dists/jessie/main/binary-i386/Packages  Somme de contrôle de hachage incohérente
 

which means :
jessie-backports/main      it is Ok
jessie/main/binary-i386/Packages  :       checksum error ??

I verified  the md5sum  for jessie/main/binary-i386/Packages, it is the same declared in  dists/jessie/release

so where is there error,

then how to skeep the checksum in the apt-get update command

thanks a lot

regards