support userdb for mail alias lookup
addresses #158
This should be ready to go now that hashbang/docker-postfix#14 is merged?
actually do we have something in hashbang/userdb to make the mail role because if not we should go make that a thing as well
no, I created it manually last night
We'll need something in hashbang/userdb in general to make new roles as I believe hashbang/userdb#41 also needs a role.
we should also add a domain key so it only accepts mail for hashbang.sh or per-deployment master domains.
mail seems to be working as expected, this is all deployed
i know it's stuff that we didn't have before but i'd appreciate if we get the hosts and IPs stored in Ansible so we can add new shell servers easier.
we have addresses in the hosts file: https://github.com/hashbang/admin-tools/pull/163/files#diff-85cf4e6d42a71e693fd780c8b29accddR3 and I created #165 to handle generating configs from that