ASA5505 blocking email (yahoo, Gmail) going to MDaemon Mail Server
I would like to seek your help regarding my problem with ASA5505. My setup is:
When the server is directly connected to internet using 2 lan card, yahoo mail can be received thru MDaemon mail server.
But when I attached the ASA5505, all emails coming from other email services (Yahoo, Gmail) are always blocked. My ASA software version is 8.0. And the server is statically NATed from Public to private.
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...