[qmailadmin] remature end of script headers: qmailadmin

[akash vir]

 
hi
i am using RHE 4
with qmail+vpopmail
after install qmailadmin it's works properly but when ever i click on new forward it's give me 500 internel server error
in apache error_log it's show me following error

Premature end of script headers: qmailadmin


can any buddy help me out in this i tryed all options but not usfull