Prepare virtual user setup for dovecot and OpenSMTPD
At the moment we use one mailbox per unix user on the mail machine. This should be changed to a virtual setup where no users login to the mail machine anymore.
create MR for new dovecot and OpenSMTPD config
create migration script for dovecot mailboxes
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information