Hi, i’m new to letsencrypt and have a special setup: I’m owner of the domain example.com Under this name i run two Servers: a mailserver: mail.example.com IN A 1.1.1.25 a webserver www.example.com IN A 1.1.1.80 On the Webserver i successfully installed certbot. I want to use the webserver to…

[image] tslbai: I don't want run a Webserver on the mail.example.com Then you will not be able to obtain a cert in the way you're trying to do it. When you're using the http-01 validator, the Let's Encrypt servers attempt to connect to http://$HOSTNAME/.well-known/acme-challenge for each $HO…

Thanks for the explanation. (DNS doesn’t work in my case because it has a static config and doesn’t allow dynamic updates.) Is there no way to use the webserver (located in SAME domain as the mailserver) for the proof of Domain-ownership? Commercial CAs accept a mail-confirmation to e.g. postmast…

My understanding is: letsencrypt provides Domain-validated Certificates (DV-Certs) but makes a FQDN-Validation for each host? right? So i will bite the bullet and buy a true DV-Certificate … Sorry, I’m afraid. Bye, Florian

Hi @tslbai , [image] tslbai: P.P.S. I don't want run a Webserver on the mail.example.com (neither for a short time) Then the only way is using DNS challenge. It is recommended that your DNS server support some kind of API to allow to automate the process but you can do it manually... the prob…

The “problem” is the short time of the validity (90 days) of the certificates: My servers are located behind a security-gateway containig firewall and router-acl. To open ports for short time in an automated way is difficult; manually it’s too much work. So i’m searching a webroot-based method whe…

Certs for Mailserver different from Webserver

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Certs for Mailserver different from Webserver

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