Not a problem but wanted to let people know that MIAB works on an ESXI server behind a separate nginx as a reverse proxy and thats behind a pfsense firewall. All are hosted on the same ESXI system at the moment.
I spent two days trying to get HAproxy in the pfsense firewall to work with SSL/TLS/SNI and gave up. So I set a dedicated nginx instance up and had it working in a few hours using the built in stream function to handle TLS traffic. So much easier in nginx.
I have two separate web servers and a separate MIAB server running four email domains, and am just setting up a fifth (circa 50GB of mail) at the moment. Currently using imapsync to copy data over. Its taking some time 
All DNS is handled externally by easydns as I know how that works and I have a number of external hosted servers that I rely on. Had some issues with the certbot not working for some certs and then found that an older AAAA record needed changing. Now seem to have all the certs working which I’m pleased about.
Still working out how to get reverse DNS done as easydns wants $25/year to host this which is a complete rip off, so any suggestion on how to resolve (no pun intended) this appreciated.
I don’t understand MTA-STS so need to look at that and what I need to do. I’m keen to get the status checks all down to green.
Also not sure what I need to set ns1 and ns2 to get rid of the warning. I’m not going to use MIAB as the dns resolver so I want that to go away
The only thing is to see if I can do backups to onedrive or Apple icloud as I pay for them and don’t really want to have yet another subscription.
So thanks for the software,.
Rob