We are attempting to retrieve email from Exchange 2007 through ColdFusion 9's CFEXCHANGE tags (which uses WebDAV).
It appears that when the result set is too large the WebDAV service sits in a blocked state that does not time out. It will work fine for smaller requests.
The size that causes this to happen is around 25k.
The problem is repeatable by connecting directly with Chrome's REST console. This indicates that it is not a ColdFusion issue.
Everything has been running without error until a few weeks ago. There were no patches or other system updates during that time. I'm not sure if the general size of email was less than 25k until then but it seems unlikely.
Is this a known issue?