Thread Starter
steehl
(@steehl)
We finally found the problem: WordPress is running on a hosted service at STRATO. Strato also has a guest-book spam filter included in its service. This spam-filter blocks suspicious post requests by returning a 503. For some reason it sometimes (not always) detects wordpress editor save request including links in the content as such suspicious post requests and blocks them.
Deactivating the spam filter solved the problem.
Thread Starter
steehl
(@steehl)
Thanks for the first hint.
the error code generating the JSON message ist an http 500 error.
(service temporarily not available)
An interesting point this morning was, that I could do approx. 20 edits with no issues and then suddenly the problem reoccured. After that I couldn’t even redo edits which were successfully saved 5 minutes before.
