My problem: when posting locally from wordpress 2.01 trackbacks are sent, when posting with xml via Ecto they are not.
Using ecto 2.4.1 for MacOSX to send a new post with trackback to WordPress 2.01:
it sends the following trackback related information:
No related errors in httpd access_log or error_log
Post send from within WordPress with a trackback works, one sent via the xmlrpc.php file does not.