The Microsoft Exchange EdgeSync service on a Hub Transport server may fail to start at server startup, or when you manually attempt to start it.
The Case of the 739,254 NDR Message Loop
The case of an Exchange Server environment experiencing very high message traffic due to an infinite loop of non-delivery reports.
A Guide to Back Pressure in Microsoft Exchange Server
A guide to the back pressure condition that can impact Microsoft Exchange Hub Transport and Edge Transport servers.
PowerShell Script: Check Hub Transport Servers for Back Pressure Events
A PowerShell script to check Hub Transport servers for back pressure event log entries.
The Case of the Hub Transport Server Load Imbalance
An interesting look into a real world problem of multiple Exchange Hub Transport servers not load balancing their traffic load as expected.
Report Top Sender IP's on Exchange Server 2010 using Log Parser
How to use Log Parser, message tracking and protocol logs to report the top sender IPs for an Exchange 2010 Hub or Edge Transport server.
Avoiding Infinite Loops with Internal Relay Domains in Exchange 2007/2010
How to avoid creating an infinite email routing loop in Exchange Server 2007/2010 when configuring Internal Relay domains.
How to Migrate a Relay Connector from Exchange Server 2007 to 2010
How to use the Exchange Management Shell to quickly migrate a relay connector from Exchange 2007 to 2010 with the same remote IP range.
Review of CodeTwo Exchange Rules Pro
CodeTwo Exchange Rules Pro is an email management program for Exchange Server 2007/2010 that provides many useful features and enhancements for Exchange environments.
Exchange 2007/2010 Transport Rule Logging
Do Exchange Server 2007 and 2010 have a log file that can be checked to see how many times a transport rule has taken an action.