exchange 2013 sp1 multirole servers / dag On-Premise
my company is HEAVY into relaying email, pretty much from anywhere to anywhere.
we do have an external filtering provider so that saves us but its my job to make it all work.
I created a frontend transport relay connector set to anonymous and added a few /16 bit subnets (I know I know,,,)
and it works however now I have to allows unauthenticated email on every distribution group, we have over a thousand.
Is there away to either uncheck all DL with a powershell script or a way to make this not required?
sending devices use the host name relay.domain.local
Thanks