One more chapter in the trackback saga.

I installed a test Movable Type weblog (version 2.6) and succeeded in getting trackback and autodiscovery to work. Contrarily to what I said below, the & in the trackback URL can’t be escaped to &, or MT gets confused. So I changed everything back; in the process, I changed the trackback post format a little, as you can see in the test below. Also, the whole topic now has a separate trackback URL, for trackbacks not pertaining to a specific post; the URL is up near the topic header.

One stumbling block was that MT has a built-in check to never ping the same site, as NSLog() also complains. To turn this off, go to your MT folder, find the file /Lib/MT/Entry.pm, and comment out line#289, which should be

next if $url =~ /^$archive_url/;

.