Vacation auto reply program error

[Lord-Nikon]

I've setup my vacation program on Suse 10.1 to notify all senders for a specific user that that user will be out of the office for a while.

What I've done was created a .forward and .vacation.msg file in the /home/username folder where username is the name of the person on leave.

I've initialized vacation with the command : vacation -I -a and when sending mails to that person here is the error that I get:

The original message was received at Tue, 16 Sep 2008 09:18:11 +0200 from ctb-mesg5.saix.net [IP] with id msgID

----- The following addresses had permanent fatal errors ----- "| /usr/bin/vacation username"
(reason: Data format error)
(expanded from: <[email protected]>)

----- Transcript of session follows -----
501 5.6.0 Data format error

Any help will be much appreciated...