POP3_SSL Not Found in poplib module

What would cause this strange error when trying to use the poplib.POP3_SSL class.

Traceback (most recent call last):
  File "test.py", line 131, in <module>
    M = poplib.POP3_SSL('XXXXXXXX', 995)
AttributeError: 'module' object has no attribute 'POP3_SSL'

My environment is Python 2.6, REHL5

I开发者_如何转开发've never run into this problem before and it just so happens to be a problem with only one of my servers in rotation.

Your python might be compiled without ssl support.