i have a internal exchange server but keep getting firewall login screen

[sg1maverick]

so i have an internal exchange server.. dhcp etc is all off on the opnsense i have internal dns and a/cnames etc... so for a while i would be able to get to my exchange by mail.ddddd.com/owa   now its going to firewall login screen why..   

[sg1maverick]

think it was a dns thing i removed all external dns pointers and now its working

[sg1maverick]

well that was a lie its back to doing it again

[zerwes]

mail.ddddd.com should resolve to the wan address
And on the wan IP you need a portforwarding for at least https to the internal ip of the exchange server under Firewall: NAT: Port Forward
More details can be found in the official documentation at https://docs.opnsense.org/manual/nat.html#port-forwarding

[sg1maverick]

i will check that out... new to the opnsense firewall.. usually use sonicwall or firewalla never had to do that before... as long as i have internal dns records for that it would goto the internal..  a record mail  1.1.1.1 and thats it... 

[zerwes]

Sorry, could be my misinterpretation ... It is not that clear what you mean by "internal dns records" ...
Can you please explain your setup (IPs, network structure, DNS settings) and goal more in detail?