I have an intermittent problem with users trying to send mails through the our C150. It happens from Vista and XP users using Outlook 2003 and 2007.
From the users point of view the error message is "Your outgoing SMTP server does not support SSL-secured connections".
TLS is enabled on the Ironport, outlook 2003 only has the SSL option, but 2007 and Thunderbird users see the error message sometimes even though TLS is selected. The Ironport works for 99% of users all of the time, but every now and again this error will rear its head.
If anyone has any wisdom to impart it would be greatly appreciated.
This is what it looks like from the smtp_conversation
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...