Check certificate information
openssl x509 -text -noout -in
certificate
iRedmail certificate with Lets Encrypt
Quick hack on how to set certificates right on iRedmail
Lets encrypt renew test
Run in order to check whether automatic certification renew process will succeed.
certbot-auto renew --dry-runcertbot certonly --dry-run --webroot -w /var/www/html -d domain.namecertbot --nginx certonly --dry-run
Let's Encrypt certificate
**Fix or issue**
Client with the currently selected authenticator does not support any combination of challenges that will satisfy the CA. #5415
Create certificate on debian when registering domain that differs from mail owner domain
lets encrypt certificate
How to create Lets encrypt certificate for Debian + apache + dovecot + postfix
We can download the certbot-auto Let’s Encrypt client to the /usr/local/sbin directory by typing:
Lets Encrypt
Create rsa key and crt
openssl genrsa -des3 -rand /etc/hosts -out smtpd.key 2048
chmod 600 smtpd.key
openssl req -new -key smtpd.key -out smtpd.csr
openssl x509 -req -days 3650 -in smtpd.csr -signkey smtpd.key -out smtpd.crt
openssl rsa -in smtpd.key -out smtpd.key.unencrypted