I got from a client a file in pkcs7 format which seems to be common for Verisign. Although they offer x.509 certificates too the file that I had contained fields PKCS #7 SIGNED DATA field. I order to get passed that I had to edit the file and instead of :
—–BEGIN PKCS #7 SIGNED DATA—–
And instead of :
—–END PKCS #7 SIGNED DATA—–
Note that its important to have 5 (-).
In the end I ran:
openssl pkcs7 -in mynew_file.crt -print_certs -out verisign.cert
Now in verisign.cert should contain the certificate for your website and probably the intermediate chain cert.