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Kerio 9.4, Letsencrypt and Multiple Domains [message #150915]

Fri, 21 January 2022 15:43

dbosiljevac
Messages: 14
Registered: April 2015

Hey all,

I have several domains that I host on my instance of KC. I currently use an NGINX proxy with Certbot in front of my KC for automatic LetsEncrypt certificate renewal on the all domains. Basically, I get a single certificate issued with multiple SAN names.

Has anyone successfully implemented the new KC 9.4 LetsEncrypt functionality with multiple domains?

Thanks,

Dave

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Re: Kerio 9.4, Letsencrypt and Multiple Domains [message #150946 is a reply to message #150915]

Tue, 25 January 2022 09:01

ikheetleon
Messages: 31
Registered: January 2008

Yes, I have. You can create multiple Let'sEncrypt certificates (Kerio v9.4). You cannot create SAN's. So for each domainname, you have to create a separate certificate. Keep in mind that if you use the autodiscover feature, that you also need an additional certificate for this.

In my case I have 7 domains running on Kerio, so I have 14 Lets Encrypt certificates.

webmail.domain1.tld
autodiscover.domain1.tld
webmail.domain2.tld
autodiscover.domain2.tld

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Re: Kerio 9.4, Letsencrypt and Multiple Domains [message #150948 is a reply to message #150946]

Tue, 25 January 2022 16:59

dbosiljevac
Messages: 14
Registered: April 2015

Interesting. How does that work with the HTTPS server built into Kerio? Are all certificates considered "active" and the HTTPS process uses all of them?

I thought a single HTTPS process could only use a single certificate at a time.

Thanks,

Dave

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