Yuri Diogenes dishes up another great article on the ISA Team Blog site. This article Unable to "Check Out" a Document in MOSS 2007 Published Through ISA Server 2006 https://blogs.technet.com/isablog/archive/2008/10/02/unable-to-check-out-a-document-in-moss-2007-published-through-isa-server-2006.aspx?CommentPosted=true#commentmessage
In this article Yuri points out a key fact. Just because something works internally doesn't mean that it's ISA's fault when the site is accessed from an external location and doesn't work.
Check out the article -- you're sure to learn a thing or two.
Thomas W Shinder, M.D., MCSE
Sr. Consultant / Technical Writer
Prowess Consulting www.prowessconsulting.com
PROWESS CONSULTING documentation | integration | virtualization
Email: [email protected]
MVP — Forefront Edge Security (ISA/TMG/IAG)