+On Debian Jessie with lighttpd 1.4.35-4 there was a problem encountered
+between curl (which is used by Friendica in the background) and lighttp.
+This problem caused requests being served with an error code of 417 in
+the logs and no delivery of postings from the contacts.
+
+One can solve the issue by adding
+
+ server.reject-expect-100-with-417 = "disable"
+
+to the lighttpd configuratiion file (e.g. in the beginning with the
+other 'server.xxx' settings.
+