Yes, i know this solution but now i have no MailGuard. I found this is a security hole. SMTP Traffic is an ideal point for attacks. I think tha cisco must plan in the next pix release the implementation for MS Exchange. Checkpoint has a integrated MailGuard Feature for MS Exchange and post it to their users. This is not a success story for cisco.
Support for ESMTP has certainly been discussed and will make it into a future release. A sure way to give it higher priority is to ask your account team to push this for you, the more customers that the developers see asking for a particular new feature, the quicker it gets in.
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...