spam score exceeded threshold??

[Crow, Frank]

I've been trying to send a question to the Cygwin list and I keep getting:
 
"Server refused mail at END OF DATA - 552 spam score exceeded threshold (#5.6.1)"
 
Can anyone help me figure out why my question results in this?  I'm not spamming!   Just asking a couple of legitimate questions.
 
Any info is highly appreciated.
 
Thanks,
Frank
 

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