I have one ssl certificate on mydomain.com. And there are some other accounts on mydomain.com. i.e. other1.com, other2.com… Can I make them to share one ssl certificate? If it can, what shall I do? Many thanks in advance.

If the other domains are actually subdomains of mydomain.com (www.mydomain.com, mail.mydomain.com, etc.) then yes, you can use the same SSL certificate, but it would need to be a Wildcard SSL certificate, something EV1Servers does not offer yet. You can obtain one from GeoTrust directly, http://geotrust.com/products/ssl_certifica...s/wildcards.asp (they have True BusinessID and Power Server ID Wildcard), or RapidSSL http://www.rapidssl.com/ssl-certificate-pr...certificate.htm.

Any of the three would be able to secure subdomains of one domain name, but I don't know which one would be most appropriate for you without knowing exactly what it is you are securing? Are these login pages, or sites doing extremely high levels of eCommerce?

Thanks for your help. Actually they are not subdomains. Now i have one ssl certificate installed on hostdomain. I wonder if i can make my hosted domains share this ssl certificate. Or i should buy more ssl certificates for hosted domains?

I beleive you would need a SSL Certificate for each domain that is hosted.

Thank you for your help!

Not a problem. Glad I could help.