You are correct that the connection from 126.96.36.199 (host93-15-static.5-79-b.business.telecomitalia.it) was rejected because the IP or the hostname was not on the RELAYLIST of that listener that it connected to.
In the example you provided, the listener is "ascout (188.8.131.52)". should have a relaylist at the top of the listener. You can add either the IP, IP range, hostname or partial hostname.
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...