I ran into an interesting Exchange 2010/2007 co-existence issue today. After a new Exchange 2010 (all-in-one) server was introduced into the environment traffic would only flow from the 2010 server to the 2007 hub/cas server and not the other way around. The mail queues stated the last error to be
“Initial error: 451 4.4.0 dns query failed. The error was: SMTPsend.dns.nonexistentdomain; nonexistent”Continue reading
Ok, so I woke up and was wide awake at 4am this morning. I took it as a sign to lose my mind for a while and get to hacking another script. The result is a client access setting report script which includes all internal and external paths along with their authentication settings. It needs some prettying up and a bit of love but it does exactly what I’ve wanted in Exchange 2010, gives me an overall view of all client access settings (specifically related to IIS). Enjoy.
Continue readingIn working on a production issue with my company’s flagship SaaS product I worked with some of the brilliant F5 engineers to isolate one web server in the load balanced pool which was intermittently failing. The F5 engineer recommended a health monitor that does more than just poll for a static page. He suggested we implement some kind of soap call to make the application pool do some work and return a result (I guess in case the IIS application pool is misbehaving but not down). So I worked with one of our developers to do just that but ran into some caveats which required yet another custom health monitor.
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