Ever had an issue with the to: field showing up in the body of the message? The external sender is sending about 50 recipients in one message and the from field is OK, but the to: and the subject: show up in the body of the message!
I have am thinking this is an outlook/exchange issue more then ironport, but I though I would ask!
I've seen this once when we were sending dkim signed messages to an external company. They had spam filtering software that messed up the dkim header, probably because it was quite long, and all the other headers ended up in the message body. I don't know the name of the software, but it was something running on their exchange server.
So indeed, capture a copy of the message as it is received/sent by the ironport so you know where it gets corrupted.
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...