fix: move email addresses to var file

roles/mail/templates/virtual

@@ -0,0 +1,17 @@
+# you can also so this: test-second-account@atlantishq.de test@atlantishq.de
+# which will give all incoming mails of test-second-account to test (sorta obvious)
+
+# IMPORTANT >> IT IS _NOT_ NESSESARY TO DO THE FOLLOWING << IMPORTANT
+# user@atlantishq.de user@esports-erlangen.de
+# every user will get emails from both domains
+
+# If a user also wants to _SEND_ mails, he also have to have an
+# entry in the /etc/postfix/enabled-senders
+
+# CHANGES IN THIS FILE MUST BE MAPPED BEFORE RESTART (!)
+# postmap FILENAME
+# CHANGES IN THIS FILE WILL ONLY BE APPLIED ON POSTFIX RESTART, NOT RELOAD (!)
+
+{% for ingress_mail, target in mail_virtual_transport.items() %}
+{{ ingress_mail }} {{ target }}
+{% endfor %}