You are supposed to forward such emails to the foundation - there is a special email address for this. You dont have to post them on the wiki.
"Supposed to"? Well, it's not in the [[Wikipedia:Image use policy|policy]]. I dunno where this has been communicated, but not on the policy page.
It's mentioned on http://en.wikipedia.org/wiki/Wikipedia:Boilerplate_request_for_permission
It's more of a sensible guideline than a policy, since it helps to prove permission was really given, but isn't the only way of doing that.
Angela.