[Pound Mailing List] Need Help with "ListenHTTPS: could not get certificate CN"

Hello everyone,

i have a problem to start pound with a multidomain-certificate  from 
commodo.
It is installed on a apache webserver with multiple domains.
The first you can reach with the domain and url on 
https://webmail.ecom-server.de.

On my debian wheezy system there is installed pound version 2.6-2+deb7u1

If I start pound , i got:
starting...
/etc/pound/pound.cfg line 65: ListenHTTPS: could not get certificate CN
Line 65 is:/    Cert "/etc/pound/poundssl.pem"//
/
Here ist my /etc/pound.cfg where XXX.XXX.XXX.XXX is the IP of my server:

/ListenHTTP//
//        Address XXX.XXX.XXX.XXX//
//        Port    80//
//        Service//
//                BackEnd//
//                        Address 127.0.0.1//
//                        Port    8000//
//                End//
//        End//
//End//
//ListenHTTPS//
//        HeadRemove "X-Forwarded-Proto"//
//        AddHeader "X-Forwarded-Proto: https"//
//        Address XXX.XXX.XXX.XXX//
//        Port 443//
//        Cert "/etc/pound/poundssl.pem"//
//        Service//
//                Backend//
//                        Address 127.0.0.1//
//                        Port 8000//
//                End//
//        End//
//End/

I also did my certificate //etc/pound/poundssl.pem /with all of this:
https://www.digicert.com/ssl-support/pem-ssl-creation.htm
but it seems pound cannot read the domainnames from my commodo 
multidomain-certificate.

I also compile the latest version from scatch, but with the same error
mail:/opt/Pound-2.7$ ./pound -v -f /etc/pound/pound.cfg
starting...
/etc/pound/pound.cfg line 65: ListenHTTPS: could not get certificate CN

Someone have an idea?
Thanks
helmut