Problem with mount

Hi there

i have a problem with mounting to a Windows share: struggle to get to the root cause:

when i mount to a Windows share it works fine:

mount -t cifs //server/reports/ExportedDumps/Linux --verbose -o user=myadmin,password=password,domain=za.xxx.nnn        /mnt

however from another Linux server it does not mount - get the following error:

[root@server01 scripts]#  mount -t cifs //server/reports/ExportedDumps/Linux --verbose -o user=tsadmin,password=password,domain=za.xxx.nnn        /mnt

mount.cifs kernel mount options: ip=10.109.4.129,unc=\\server\sec,,ver=1,user=myadmin,domain=za.xxx.nnn,prefixpath=ExportedDumps/Linux,pass=********