I have two organizational unit in which some users resides in it and I want them to allow 20 mb for one organizational unit and 10 mb for another organizational unit of mail to be downloaded.Can this be achieved in IRONPORT email security .
Mail Policies -> Mail Flow Policies -> Policy is where the message size would be set and allowed through the appliance. You could create new (or alter exisiting) mail flow policy/policies to meet your size expectations. After that - adding a Sender Group (Mail Policies -> HAT Overview) and placing the sender(s) into those groups allow those users to be matched to the mail flow policy you need.
Senders can be added to Sender Group with the following limitations:
The following formats are allowed: IPv6 addresses such as 2001:420:80:1::5 IPv6 subnets such as 2001:db8::/32 IPv4 addresses such as 10.1.1.0 IPv4 subnets such as 10.1.1.0/24 or 10.2.3.1 IPv4 and IPv6 address ranges such as 10.1.1.10-20, 10.1.1-5 or 2001::2-2001::10. Hostnames such as example.com. Partial hostnames such as .example.com.
Please see the 8.0.1 User Guide, Defining Which Hosts Are Allowed to Connect Using the Host Access Table (HAT), for further detailed information and assistance.
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...