Thanks, we have a DNS server which is resolving perfectly; I don't have any issue about name resolution (100%) fine.
The issue is that outlook needs to use the TCP port 135 to initiate the communication with the exchange server. That is the reason why when we allow TCP on port 135 we don't have the problem. But port 135 is use for DoS. So Im looking for another option that will not expose us to DoS.
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...
[toc:faq]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 and UDP are I...