Tainted filename for search: ‘/etc/exim/domains/domain.com/aliases’
[email protected] cannot be resolved at this time: failed to expand “${extract{1}{:}{${lookup{[email protected]$domain}lsearch{/etc/exim/domains/$domain/aliases}}}}”: NULL
As @changeme already said, this is affecting lots of other projects and it is worth looking into it so thanks for giving us a heads-up, but at this moment it should not affect Hestia.
Just checked a couple of Hestia installs running ubuntu 20.04, 18.04 and debian10 and none had exim4-4.94 available as an update, how did you end up with that version ?