$ sudo exim -bt  otrs-test@wikimedia.org
LOG: MAIN
  Warning: Tainted filename for search '/etc/exim4/aliases/wikimedia.org'
LOG: MAIN
  Warning: Tainted filename '/etc/exim4/aliases/wikimedia.org'
otrs-test@wikimedia.org
  router = gsuite_account, transport = remote_smtp
  host aspmx.l.google.com [142.250.115.27]
$  grep otrs-test /etc/exim4/otrs_emails                                                     
otrs-test@wikimedia.org
mx2001 ~ %