[TYPO3] dmail has wrong fetch-url --> content fetching does not work

[Johannes Konert]

Hello list-members,
Using direct_mail configuration and all available tutorials, I still
cannot figure out, why dmail cannot fetch the content of a newsletter.
The wired thing is (taken from backend-page of dmail):
   Fetching the mail content
   You're about to read the url with the mail-content from these URL's:

   PLAIN: http://jindex.php?id=41&type=99
   HTML: http://jindex.php?id=41
   (..)

This of course throws a php fetch()-exception (URL does not exist).
Setting
mod.web_modules.dmail.long_link_rdct_url=http://jeykey.de/index.php in
the page-header of the page containing direct_mail does not change it.
How can I make the broken link work??? (and where is http://j comming
from?) Thanks for your help.

Regards
Johannes