I updated my version of Ubuntu and during the update, I have now lost the ability to use either rainloop or snappymail, as I ran the update command for Hestia its saying /usr/sbin/sendmail is not found.
Is there a place that I can download the configuration for that directory to fix it, if not how do I go about fixing it without reinstalling as there is client information which cant be lost (even though its backed up)