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Documentation feedback

Hello,
 
In pdf documents for Adams, there is in very beginning of document written:
 
At MSC Software, we strive to produce the highest quality documentation and welcome your feedback. If you have comments or suggestions about our documentation, please write to us at documentation-feedback@mscsoftware.com.
 
I really appreciated your effort, but if i want to write to mentioned mail address, i got reply that mail is rejected, and is just for internal persons.
 
So how it should work and where to write feedback?
 
Regards,
 
Jozef