v134 Dovecot fails to start: sni.conf: Multiple names no longer supported in local_name value

Symptoms

Dovecot fails to start with an error regarding the /etc/dovecot/sni.conf file.

CONFIG_TEXT: Fatal: Error in configuration file /etc/dovecot/sni.conf line 6: Multiple names no longer supported in local_name value

Description

When using the CloudFlare Origin Certificate, the dovecot sni.conf file is updated to include CloudFlare Origin Certificate; however, the use of a space in the name causes Dovecot to fail to generate a valid configuration file and prevents the service from starting.  

We've opened an internal case for our development team to investigate this further. For reference, the case number is CPANEL-51692. Follow this article to receive an email notification when a solution is published in the product. 

Workaround

1. Login to your server via SSH as the root user.
2. Using your favorite editor, modify /etc/dovecot/sni.conf

3. Add an underscore instead of spaces to the CloudFlare Origin Certificate name.

   # diff /etc/dovecot/sni.conf /etc/dovecot/sni.conf.bak
   1d0
   <
   3c2
   < # This version of dovecot supports: wildcards, multi local_name, explicit maincert local_name.
   ---
   > # This version of dovecot supports: wildcards, multi local_name, explict maincert local_name.
   6c5
   < local_name "CloudFlare_Origin_Certificate" {
   ---
   > local_name "CloudFlare Origin Certificate" {
   24c23
   < # End Domain TLS
   ---
   > # End Domain TLS