Can't send a MSMQ message to the second DNS name of a server

To resolve via DNS use the DNS name rather than the IP this way--both should resolve:

FORMATNAME:Direct=OS:load-intv\private$\MyQueue
FORMATNAME:Direct=OS:load-int-01\private$\MyQueue 

Additionally, run the following registry script on the MSMQ server (per http://support.microsoft.com/kb/306785):

reg.exe ADD HKLM\Software\Microsoft\MSMQ\Parameters /V IgnoreOSNameValidation /t REG_DWORD /d 1 /f