I’ve been trying to setup MailCow, and everything is working fine. However some pages, for example the DNS checker will end up in a time-out.
Additionally the actual IMAP and SMTP servers aren’t responding either; while the edge router (pfSense) has the required ports open.
The setup is like so:
pfSense -> Seperate Webserver running nginx with the vhost file in the documentation of MailCow -> VM hosting docker with the mailcow containers.
Does anyone have an idea what could be going wrong?