Policy trace is not useless. However it is just another test. I would recommend using it as a confirmation of what you expected to happen. The real explanation of what will happen inside your box is the access-logs.
Can you take a screenshot of your test for me? Also when you say subdomains, what do you mean? Other domain names?
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...