We have our Ironport setup with about 10 receiving domains. My aim is to set it up so that all email sent and received from a particular domain (client.com) uses TLS. This domain will only send mail to our primary domain (company.com).
I am wondering how the TLS certificate will work with multiple domains? Is that cert just mapped to one email domain? Is a separate cert required for each domain, and so a separate listener for the receive domains that I don't need TLS for?
Thanks Luis. And when I am generating the cert signing request, do I use the external DNS name of the Ironport (the MX record) or the internal DNS name that the Ironport uses (same as the hostname that the Ironport responds to for HELO)?
Or I could just change the internal name to be the same as the MX record.
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...