create with mail.sh command

[toure32]

I'm trying to create mail account via plesk command interface, I've used the mail.sh command as follow :
.command

[root@cotedivoireisback bin]# ./mail.sh --create [email protected] -mailbox true -passwd gauss123
and we try this
root@cotedivoireisback bin]# ./mail.sh --create "[email protected]" -mailbox true -passwd "gauss123"


result

+ÃÙ實%U.±:Öý$º6K+]3(¦Õ´ïõ]Ã+]¬ZF*õ@³^i-è0ÑRƒÓ$ÃÞa0Ñ`1Õ[,6²¦Nßù¥ê-ñ]+{*(·¦ ä9ë&ò3Ùáæ-Re¾q.
ëU¢3ê+¦+Ô6=4¯©¶[root@cotedivoireisback bin]#


the account is not created.
Note i'm using plesk 7.5 reloaded on redhat enterprise server 3.0
regards.