My Mac is joined to an Active Directory domain. What I expected to see was the same ease of access to file shares and internal websites that Windows computers joined to the domain experience (i.e., no authentication needed; it just uses Windows Integrated Authentication). Instead I am asked for credentials each time I try to access those shares and protected websites (e.g. SharePoint).

Is this normal behavior, or is something wrong with my Mac that it prompts me for my username and password for the domain when I access Windows file shares or intranet sites protected by NTLM/Kerberos?

Machines include:

• MacBook Pros running Mountain Lion
• MacBook Pros running Lion
• MacServer running Lion Server