One more issue we encountered, if only for completeness:
When writing to the public contact email address given on Terracotta's "Contact Us" page, email@example.com, we received an automated response whose 'From:' address was ex2010Admin@softwareag.com, in part stating:
Delivery has failed to these recipients or groups:
Your message can't be delivered because delivery to this address is restricted.
Perhaps worth checking onthis as well, if that behavior is still present and isn't intended. Thanks again!