Questions tagged [lets-encrypt]

Let's Encrypt is a certificate authority that provides free X.509 certificates for TLS encryption.

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2 answers
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When using Let's Encrypt certbot, how do I restart/reload a network service only once and only if the cerificate was actually renewed?

The certbot command provides two hooks that run after automated renewals, from the docs: --post-hook POST_HOOK Command to be run in a shell after attempting to ...
0 votes
0 answers
29 views

Debian firewall allowing connections on port 3000 [duplicate]

I have a Debian server running Rocket Chat. The web interface is on port 3000 and works. I am trying to configure LetsEncrypt and checking the firewall it appears only port 22 is permitted. How can I ...
3 votes
2 answers
1k views

Is it possible to change the expiry threshold for expiring certificates in Exchange? (Event 12018)

We've recently switched to using LetsEncrypt for our Exchange certificates, which have a maximum validity of 90 days. Unfortunately this means I'm being pestered with tickets generated by our ...
0 votes
1 answer
2k views

How to install letsencrypt wildcard certificates?

I am using certbot/letsencrypt from the EPEL repository with apache on CentOS 7 without any issues on "normal" domain names. The certbot tool recognizes server name aliases from the virtualhost config ...
0 votes
0 answers
74 views

MongoDB issue with TLS

I am trying to set up TLS certificates for my standalone MongoDB instance on a cloud compute instance. I got the certificates from certbot using the command sudo certbot certonly --standalone -d. i ...
0 votes
0 answers
88 views

Enable HTTPS with letsencrypt on Amazon Linux 2 with Apache

Server: AWS Linux 2 (EC2 Instance) I'm attempting to renew a SSL certificate (with Let's Encrypt) for a webpage/application Trend Micro Deep Security. Unfortunately, I didn't setup the server so I'm ...
2 votes
1 answer
9k views

Certbot failed to authenticate some domains (authenticator: nginx)

Im running nginx as reverse proxy and for some reason im unable to renew letencrypt certificate, i have tried to upgrade nginx and certbot to latest version. It has worked before and im not sure if ...
-1 votes
0 answers
26 views

Problems configuring TLS with letsencypt and exim4

I am using letsencrypt and have set the configuration in exim4 to look in my letsencrypt directory but I still get an error 454 TLS currently unavailable my exim4.conf: https://dpaste.com/CJXQZDTH9 ...
0 votes
1 answer
4k views

Nginx not listening on new ports with systemctl reload nginx after adding config with a new port

Not sure how to quickly summary this issue, so I will put my scenario in bulletpoints: Normal basic nginx install I only use https(443), so I removed all http(80) config When you start nginx (or ...
0 votes
0 answers
37 views

How to get a Let’s Encrypt wildcard certificate via cert-manager in Azure without changing DNS?

How to get a Let’s Encrypt wildcard certificate for (an already working subdomain in) Azure? I get https://cert-manager.io/docs/tutorials/getting-started-aks-letsencrypt/ running But it uses only the ...
0 votes
0 answers
17 views

Letsencrypt autorenewal not working

I ran certbot renew on my domains, but the expiration hasn't updated. How can I tell what I did wrong? Exact steps: $ sudo certbot renew --force-renewal Saving debug log to /var/log/letsencrypt/...
0 votes
2 answers
170 views

How do I properly issue Let's Encrypt certificate for my mail server?

How do I properly issue Let's Encrypt certificate for my Postfix mail server? Right now I have a self-signed certificate and I get these messages it cannot be trusted. I did certbot --nginx certonly -...
0 votes
1 answer
507 views

How to get both ECC & RSA certificates from Let's Encrypt for Postfix?

Let's Encrypt has started issuing ECC certificates by default since Certbot 2.0. This is not a problem for modern web browsers, but Let's Encrypt certificates can be used for other purposes than HTTPS,...
5 votes
2 answers
4k views

Invalid version when updating certificate with certbot

I have a server with a Let's encrypt certificate installed with certbot. I want to renew it with the following command sudo certbot renew --force-renewal but I get an error: Saving debug log to /var/...
0 votes
1 answer
52 views

IP redirect Lets encrypt

Here is Lets encrypt documentation regarding http validation: "Our implementation of the HTTP-01 challenge follows redirects, up to 10 redirects deep. It only accepts redirects to “http:” or “...
0 votes
1 answer
204 views

How to modify the command line used to renew a certificate using WACS

I have been using Let's Encrypt certificates for some of my domains/servers for a while, using the win-acme client for Windows for the generation and renewal. My problem is: every renewal I have to ...
7 votes
1 answer
26k views

Letsencrypt for all subdomains *.example.com [duplicate]

I'd like to obtain one certificate working for all my subdomains *.example.com. This works: certbot-auto certonly --webroot --webroot-path /home/www/example/ --domain example.com ...
163 votes
12 answers
333k views

Best practices for setting a cron job for Let's Encrypt (Certbot) renewal?

Is this correct way to set cron for renewal of Let's Encrypt cert in Apache2 ? I use Ubuntu 16.04. @monthly letsencrypt renew && service apache2 reload
0 votes
0 answers
133 views

MariaDB Crashes on Startup with Let's Encrypt Certificates

It seems I'm encountering an issue while setting up secure connections for my clients to connect to my database server on Debian 12. Every time I attempt to start MariaDB, it crashes with a Private ...
0 votes
1 answer
156 views

Mikrotik: Creating Letsencrypt cert fails on RouterOS v7

From RouterOS's webfig CLI I attempted to create a LetsEncrypt cert: certificate/enable-ssl-certificate dns-name=my.domain.com But it returned the error: progress: [error] http challenge validation ...
0 votes
2 answers
169 views

Postfix TLS with Letsencrypt configuration

I am running Postfix inside a docker container. Certificate are generated with certbot. With the following configuration: smtpd_tls_cert_file=/var/keys/fullchain.pem smtpd_tls_key_file=/var/keys/...
0 votes
1 answer
199 views

Ubuntu 23.10 certbot: Unable to obtain certificate from root ISRG Root X2

Due to internal security policies I need an P384r1-only certificate chain. I use certbot 2.1.0 on Ubuntu 23.10. From my understanding certbot certonly -v \\ -a apache -i None \\ --cert-name <...
0 votes
0 answers
116 views

StrongSwan IPSec VPN - IKEv2 - LetsEncrypt Certificate Issue (building CRED_PRIVATE_KEY - RSA failed, tried 10 builders)

I followed the link below for setup IKEv2 VPN Using Strongswan and Let's encrypt on CentOS 7. How to Setup IKEv2 VPN Using Strongswan and Let's encrypt on CentOS 7 But info on that link has been ...
0 votes
0 answers
38 views

How to add trusted SSL certificate to LinuxForHealth FHIR Server

I'm currently facing an issue with my LinuxForHealth FHIR Server setup and SSL certificates. I have the FHIR server running as a Docker container on my server, using a self-signed certificate and ...
4 votes
3 answers
4k views

Nginx master process running as root, but warnings state that it is not

I am running nginx 1.11.3, compiled from source with the addition of the ngx_cache_purge module, on Ubuntu 14.04.3 server. I'm seeing in the nginx error.log the following: 2016/08/03 14:30:00 [warn] ...
0 votes
1 answer
11k views

Unable to renew Let's Encrypt SSL certificate in Nginx Proxy Manager

I've set up a few sites in Docker, on Linode. I started by following these instructions: Connect Your Docker Containers to Domain Names For Easy Access using Portainer on Linode The steps I followed ...
2 votes
1 answer
6k views

disable ssl for mysql client apps

I have set up SSL for mysql replication. The problem is, that it makes problems on the other local apps which use mysql. Like postfix: Jul 25 23:00:22 srv1 postfix/proxymap[3141]: warning: connect ...
0 votes
2 answers
78 views

In Postfix, Should SSL FQDN Matches with myhostname or mydomain field in /etc/postfix/main.cf?

Quoted from the documentation: myhostname The internet hostname of this mail system. The default is to use the fully-qualified domain name (FQDN) from gethostname(), or to use the non-FQDN result ...
0 votes
0 answers
39 views

Certbot enables root domain, instead only subdomains

I own a domain, lets say example.com. I want a root domain example.com to be 404 or return a blank page (if 404 is not possible). sub1.example.com - should redirect a traffic to a running docker ...
1 vote
1 answer
319 views

Securing LDAPS service of Azure Active Directory Domain Services with Let's Encrypt certificate fails

While I was trying to import certificates into Entra Domain Services to secure the LDAPS service. I read the instructions (CN=<domain name> etc.) on how to do this. Self-signed certificates were ...
1 vote
3 answers
3k views

openLDAP certificates untrusted or revoked

I've already spent two days on this problem but I can't find any solution. Two openLDAP server run from docker on different hosts in master/master scenario. ldapsearch command or syncrepl process run ...
2 votes
1 answer
521 views

Certbot stopped generating certificates

tl;dr : Certbot stopped generating certificates, shows a "Redirect loop detected" error, but there is no actual redirect loop. The following issue appeared around 2023-11-30. I've focused on ...
0 votes
2 answers
4k views

Using Nginx to serve Multi-tenant app with HTTPS

We have a multi-tenant application (dotnet core + Angular), the main website url for https://example.com, The customers URLs are (http://cust1.example.com, http://cust2.example.com,......) If the ...
0 votes
1 answer
253 views

Use let's encrypt certificates with the prometheus node exporter

I'm trying to configure a prometheus node exporter with HTTPS using the website certificates generated by let's encrypt. There is certificates with permissions default let's encrypt permission But I ...
-1 votes
1 answer
120 views

How can I authenticate the ownership of the server without opening port 80 in letsencrypt using nginx? [duplicate]

I am on nginx web server. certbot --nginx -d domain_name I'd do just this when port 80 used to be open. But a client doesn't know how to open port 80. So, I need alternatives.
0 votes
1 answer
259 views

How to Submit a CSR for a Let's Encrypt Certificate Using Posh-ACME in PowerShell?

I'm working on issuing a Let's Encrypt SSL certificate for my domain using Posh-ACME in PowerShell, specifically for a wildcard domain (*.mydomain.com). I have already generated a CSR, since it's ...
-1 votes
1 answer
209 views

Letsencrypt is generating self signed certificate, not wanted

I'm struggling with generating certificates for my nginx proxy on Docker. I've designed the docker-compose in the following way: version: "3" services: postgres-db: image: postgres:15....
0 votes
0 answers
155 views

Ubuntu/Nginx server seems to be supplying non-existant SSL certificate

I had four websites configured on an Ubuntu 22.04 server using NginX. There was a technical problem with the database connection that required me to move the four websites to a new server. I moved ...
0 votes
1 answer
221 views

Dovecot certificate is empty

I configured a Mail server with postfix, dovecot and mysql from the documentation. When I add a mail address in Outlook, it refused. I tried everything what I can find, but nothing helps. Can somebody ...
3 votes
3 answers
2k views

Unable to run nginx because of missing nginx.conf after fresh install on Ubuntu 20.04 LTS

I had trouble with getting my letsencrypt certificate running for nginx so I tried uninstalling everything and starting from scratch. Now, when I (re)install nginx on my Ubuntu 20.04 LTS server sudo ...
0 votes
0 answers
141 views

Create letsencryot ssl for both IPV4 and IPV6 + reverse proxy

i have a vps with ipv6 ::ffff:8b3b:e2ee and 139.59.226.237, i plan to add ssl to my ipv6 and using nginx with reverse proxy to other ip https://139.59.226.237. If i dont include [::]:80 and [::]:443, ...
14 votes
1 answer
4k views

Why does my Let's Encrypt certificate contain references to Cloudflare?

I own a website that uses a Let's Encrypt certificate. It's not behind Cloudflare, it's hosted at OVH and I'm accepting direct traffic from it. Now, I set up an apache2 webserver and used certbot to ...
0 votes
0 answers
16 views

Duplicating an EC2 instance for creating a development platform for Wordpress site

I have an EC2 instance running Ubuntu hosting a Wordpress site on Apache. I've used LetsEncrypt's CertBot to create an SSL certificate and everything's working fine. I also have direct IP to domain ...
2 votes
2 answers
6k views

How can I make SSL Lets Encrypt certificate auto renew on Ubuntu

How can I make the certificate for vgo site to auto new every time so I don't have to renew it manual or it will auto renew itself? ssl_certificate /etc/letsencrypt/live/www.site.com/fullchain.pem; # ...
-1 votes
1 answer
1k views

LetsEncrypt certificate (renewing) installing error

I'm trying to renew my LetsEncrypt certificate on my Raspberry Pi running apache2, but I seem to get an error when CertBot tries to generate the certificate. Expected sha256 ...
0 votes
1 answer
137 views

Win ACME DNS validation for Google DNS is not working

I am trying to request a LetsEncrypt certificate using DNS validation. My DNS provider is Google DNS. No matter what I do, I keep receiving the following error: [EROR] File C:\LetsEncrypt\{GCP-...
2 votes
3 answers
2k views

How to troubleshoot ERR_SSL_VERSION_OR_CIPHER_MISMATCH on server with nginx reverse proxy and let's encrypt?

I have a server (Debian 9.13) with several websites running in Docker containers with nginx (1.13.12) as a reverse proxy. The websites are under two domain names : alchimie-web.com and ...
0 votes
1 answer
750 views

DST Root CA X3 (Self-signed) - has expired in certificate chain used by Let's Encrypt (Apache/Windows)

Is it safe to remove a self-signed root certificate from the chain; and what, if any, are the consequences of doing that? And how would I go about doing this on a Windows setup? The instructions under ...
-3 votes
2 answers
113 views

Creating/Configuring a DNS server with runtime configuration [closed]

I have a big Windows video/audio application that may be controlled remotely over a web server. For that, I can listen to a local port in a, say, 192.168.1.10 system to port 8000, forward the port via ...
3 votes
1 answer
4k views

nginx config using variable in ssl_certificate path throws permissions error

The nginx configuration server block: localhost:/etc/nginx$ cat nginx.conf | grep -B 3 -A 6 '$ssl_server_name' server { listen 443 ssl http2 default_server; ssl_certificate /etc/...

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