To install the AlphaSSL Root Certificates, perform the following steps:
Create a text file (notepad or shell editor) with the GlobalSign Root CA Certificate followed by the AlphaSSL intermediate certificate directly below it. It will look like this:
-----BEGIN CERTIFICATE-----
GlobalSign Root CA Certificate
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
AlphaSSL intermediate Certificate
-----END CERTIFICATE-----
Save as AlphaSSLroot.crt
Save the file to apache/conf/ssl/ - when installed the directory will look like: apache/conf/ssl/AlphaSSLroot.crt
STOP your apache server.
Locate the httpd.conf file and open it in a text editor
Locate the SSLCaCertificateFile directive in the httpd.conf file and remove the leading # from the line.
Modify the path at the end of the line to reference the location where you saved the AlphaSSLroot.crt file.
For example: SSLCaCertificateFile /usr/local/ apache/conf/ssl/AlphaSSLroot.crt
Restart Apache