DNS Alias Problems with Windows Server 2003 R2

A colleague of mine discovered today that when he is logged onto the server “Server1” and he tries to connect to a network share using the DNS alias “Alias1”, he cannot connect. This is now causing a major problem since we are running macros that have UNC’s hard-coded in. Anyone know how to avoid this or have any quick fixes? We could go in and change the UNC for the macros, but just wanted to throw this question out there to see if anyone experienced the same problems. Thanks!