Clients are being prompted for credentials on one of the two CAS servers in the array.
Outlook 2007 clients are only prompting for credentials, 2010 clients are fine.
WNLB - Outlook.company.edu 172.16.0.61
CAS1 - CAS1.company.edu 172.16.0.103 (WNLB nic) 172.16.0.88 (physical nic)
CAS2 CAS2.company.edu 172.16.0.104 (WNLB) and 172.16.0.89 (Physical nic)
Clients that are trying to connect to CAS2 are being prompted, clients for CAS1 are not.
Previously, DNS had been pointed at 103, the CAS1 WNLB nic and I had changed outlook.company.edu back to 0.61 (vs 103) and started to notice issues connecting. I have since changed it back to 103 and still see prompts for credentials, regardless of an existing profile or a brand new profile.