Simple Guide: Using Lets Encrypt SSL certs with Dovecot

Server
7

Update:

  • it works with the iPhone
  • it fails with Thunderbird

Update #2:

It works with Thunderbird and the following configuration:

security.OCSP.GET.enabled: true
security.OCSP.enabled: 1
security.OCSP.require: true
security.ssl.enable_ocsp_must_staple: false
security.ssl.enable_ocsp_stapling: true