fp=Resource id #1 errno=0 errstr= - result from Paypal is: cmd=_notify-validate
Some possible problems are:
Missing or unknown request method.
Missing URL.
Missing HTTP Identifier (HTTP/1.0).
Request is too large.
Content-Length missing for POST or PUT requests.
Illegal character in hostname; underscores are not allowed.
HTTP/1.1 Expect:
feature is being asked from an HTTP/1.0 software.
Your cache administrator is sysadmin@netregistry.net.