Good Day Guys,
We are battling with an exchange 2013 installation, we have
1 x Exchange 2010 SP3 all roles installed - Physical
1 x Exchange 2010 SP3 CAS roles only - Virtual
1 x Exchange 2013 RU2 All roles (To replace current servers) - Physical
No edge server
Our problem is exchange 2010 can send to exchange 2013 but 2013 can't send to 2010. 2013 also needs to send out via the primary physical 2010 box as this is only server that is allowed to send out of my environment. Anyone had this problem? I see there is another update for sp3 that we will be applying tonight to see if it helps.
Any help is greatly appreciated.
Thanks
Shaun