qconfirm-accept can't run

 
i'installed  qconfirm from freebsd ports tree. 
 
i use qmail+vpopmail 
 
i created a .qconfirm dir in 
/usr/home/vpopmail/domains/<mydomain>/<mymail>/ 
 
and i put 
|qconfirm-check -d/usr/home/vpopmail/domains/<mydomain>/<myuser>/.qconfirm 
in .qmail 
 
when someone send email receive a request of confirmation 
and the mail remain in queue of server. 
So the sistem create .qmail-<mymail>-74298472047230872   
 
but if someone replay to email, in my log i see: 
 
@40000000401c144d2310ebcc delivery 212: deferral:   
qconfirm-check:_info:_defer:_/usr/home/vpopmail 
/domains/<mydomain>/<myuser>/.qconfirm/pending/<exampledomain>:com=-test/ 
 
 
in .qmail-<mymail>-74298472047230872 
there is:    
|qconfirm-accept 'exaple:com=-tecnico' 
'/usr/home/vpopmail/domains/<mydomain>/<myuser>/.qconfirm' 
   
 
if i use it on consolle (bash) 
i see: 
qconfirm-accept: fatal: environment variable EXT not set. 
 
 
my vpopmail was compiled with EXT options 
 
 
Anyone have an idea?