I manage an ISP network with two x1060 and one M670 device.Recently some of the customer's mail are rejected due to ip blacklist,on investigation we found that there is a large number of outgoing spam message from these domains and we confirmed that all outgoing mails are through iroport.
So we decided to enable AntiSpam filtering for outgoing mail messages. please advice me on below questions
1.What is the best methods to enable antispam with minimum false positive?
2. Is it possible to enable spam detection for some domain by creating customised policies?
3.Can we quarantine the detected outgoing spam for a period of thirty days?
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...