if you are using a firewall, you need to figure out how to define a temporary rule allowing http access. For nftables, the rule would be `nft insert rule inet myfilter myfirewall tcp dport 80 accept`.
the application may ask you a few questions. Answer them as you would like. Including the appropriate hooks in the issue command should ensure that those hooks are also included in subsequent renew commands.
## make users and aliases
```
cd /srv/volumes/mailsrv/db
mkdir aliases.d
touch users
chmod go= users
```
then edit `users` and add aliases lists to `aliases.d`. Don't forget to change its ownership once you're done: