MOCKS Block independent?

[Klaus Bertram]

Hi all,
Are the mocks block independent?
I must use SMTP Auth protocol and had wrote an action for it.
I also wrote some mocks and build it with gump (my own copy).
When i build it after the original mail block then the mocks from the 
mail block are used. But it works when i exclude the orig Mail block.

Can it be?

Klaus