Global Namespace & POP3

Hi,

We have 2 datacenters and 4 exchange servers, each data center have 1 Mailbox Server and CAS server. We have DAG enabled. We have also configured global namespace to disable redirection of outlook clients should the DAG failover occurs. We had an instance where DAG failed over, outlook clients using outlook anywhere are working as per normal, but for some reason, POP3 users are not able to connect. Does the Global Namespace cover site resilience to the POP3 service as well?

Regards,

Arthur