Just to add to why I’m fussing about timeout’s a little, I’ve worked with a lot of Exchange and HAProxy deployments and I’ve always found I need longer timeout’s than those seen in configs online.
After my last post I did a google search to see if my theory of 45-60m timeout’s are justifiable and this guy certainly thinks so:
He even goes further and tunes Exchange to be more aggressive with keep-alive which is something I have yet to need to try. However, he uses lower timeout’s than me so I’m guessing that is how he manages it.
I didn’t want to jump in straight away with such a high suggestion (Because i’m probably wrong!) but as no progress has been made and I can find a link to back me up a bit I thought I’d highlight it.