It seem the TrackBack auto-discovery didn’t work properly. I was able to send the ping by just including other MT site’s permalink. I suppose it grab the external link and extract the trackback ping URL, then send the ping. But it didn’t function now. I did turn on and off the features back then to avoid duplicate ping. Would that make it mulfunction? Don’t think so.
Right now, I got to remember to copy other’s trackback URL and paste into the box labeled “URLs to ping”. To me it’s tedious, not friendly.
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