To me it's not clear what your question is. Please make it some more clear. If I understand you right you have an old C10 with a problem in it's mail flow.
Or.... are you trying to re-use a C10 for Mail Flow Central (MFC)? And are you seeking the MFC software? If this last is the case, to things: 1) You loose your warranty and support on the C10 if you install an other OS on it. (Besides the fact that Ironport appliances do not have a video card installed, which is needed for most OS installations). 2) You can get your MFC software via your sales contact.
If I totally misunderstood you, please clarify your question.
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...