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I should note that I am using internal DNS and DHCP off my windows server and all DNS services on opnsense are disabled.

Hi all.

I am new to OPNSense and have run into an issue on the network here

I have been having some issues access internal sites (Exchange OWA & ECP / mailcleaner admin portal on their FQDN's) on the internal LAN. I can access the required pages from the WAN side of things without any issues.

DNS wise i can ping the sites as required however its like the ports are being blocked on the lan to lan traffic.

However.....

if i use an IP address i can access the required sites without any issues,

Any pointers would be appreciated.

Thanks,
Alex :(