PMTA: how to debug the pmtahttp service? (pmta http doesn't start)

Something makes me crazy, I use Power MTA to send emails and I would like to access it via http and the pmtahttp service can't start:

What I tried :

• my PMTA conf file contain:

  http-access myip admin
  http-mgmt-port 8080
  

Problem:

The service pmtahttp doesn't want to start (FAILED).

What I tried :

• to reboot the server : KO
• to change the port : KO
• to check the log: nothing new is logged since the service has "crashed" : KO

For the PMTA service we can debug with:

   /pmtad -debug

or

   /usr/sbin/pmtad –debug

Any idea how to debug the service pmtahttp?

 chown pmta:pmta /usr/sbin/pmtahttpd
 chmod 755 /usr/sbin/pmtahttpd

and to debug the PMTA Http service :

  pmtahttpd -debug

This solved the problem, if it can help some people..