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I run a Kerio Connect Server to provide e-mail services to several Clients.

Some of those Clients would like to use their own subdomain with their own SSL certificate to link to the server.

That would mean :
- A single IP with more than one SSL certificate.

Do you think this could be possible to implement more than one SSL certificate on a single Kerio instance ?

Thank you.




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You can have multiple sub domains I believe using a wildcard certificate and have, client2 etc etc - I never tried this setup though!

If you are thinking about having Kerio answer on distinct domain names though it's not possible.

An option is to use a reverse proxy engine and name based vhosts to redirect the SSL but there are inherent problems with single IP SSL implementations and the answer is probably not going to be workable for you right now. (Note a client on XP or previous will not work). upport-multiple-ssl-sites-on-a-single-ip-address

The only way to truly achieve that I am aware of is to use IP-based vhosts and reverse proxy, the SSL certificate details would be contained within each vhost.

[Updated on: Mon, 28 February 2011 15:41]


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Hi gbrown100,

Thank you for your very detailed answer.
I came to the same conclusions as you.

IP-based vhosts and reverse proxy would be a satisfying solution, but I do not want to invest the necessary time and effort as it is not worth the price from my point of vue.

The technical analysis remains very interesting anyway.

Kind regards,

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