I found this thread: Tailscale VPN: Private IP blocked
I have the accept rule above the drop rule, so why is it refusing connections?
root@azure:~# netstat -antp | grep -i exim
tcp 0 0 0.0.0.0:587 0.0.0.0:* LISTEN 118707/exim4
tcp 0 0 0.0.0.0:465 0.0.0.0:* LISTEN 118707/exim4
tcp 0 0 0.0.0.0:81 0.0.0.0:* LISTEN 118707/exim4
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 118707/exim4
tcp 0 0 0.0.0.0:2525 0.0.0.0:* LISTEN 118707/exim4
RULE ACTION PROTO PORT IP SPND DATE
---- ------ ----- ---- -- ---- ----
1 ACCEPT ICMP 0 0.0.0.0/0 no 2014-09-16
2 ACCEPT TCP 6210 0.0.0.0/0 no 2014-05-25
3 ACCEPT TCP 22,25,465,587,21,80,443 100.0.0.0/8 no 2023-08-26
4 ACCEPT TCP 12000-12100 100.0.0.0/8 no 2023-08-26
5 ACCEPT TCP 25,81,2525,465,587 ipset:UnitedStates no 2023-08-24
6 ACCEPT TCP 53 0.0.0.0/0 no 2014-05-25
7 ACCEPT UDP 53 0.0.0.0/0 no 2014-05-25
8 ACCEPT TCP 21,12000-12100 ipset:UnitedStates no 2023-08-24
9 ACCEPT TCP 80,443 ipset:UnitedStates no 2023-08-24
10 ACCEPT TCP 22 ipset:UnitedStates no 2023-08-24
11 DROP TCP 0 ipset:blacklist no 2023-08-24