i installed iredmail using this guide https://www.linuxbabe.com/mail-server/ubuntu-18-04-iredmail-email-server and rocketchat is also running in a snap instance before installing iredmail rocketchat was setup and working with auto ssl. asa soon as i finished the guide and rebooted the server rc was no longer working. Now i can only reach rocketchat on http and it refuses to connect on port 3000. i'm not sure how to proceed.