I've got 2 Ironport set up with preferred TLS to and from all domains and I've got a self signed certificate installed. TLS is OK to and from some receivers but one of them generate "Info: ICID 4884545 >> 454 TLS not available due to temporary reason (missing server certificate?)" when they send mail to me.
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...