Hyperlinks in email bodies received by thunderbird-2.0.0.5-1.fc7

["joachim.backes@xxxxxxxxxxxxxx" <joachim.backes@xxxxxxxxxxxxxx>]

Hi,

in the most emails, containing hyperlinks in the body, such hyperlinks 
are marked by thunderbird.

But in a few such emails, they are not marked. Can somebody explain 
this? Especially, if I compose additional other emails to myself 
containing these URL's, the are marked after I received them.

I see no rules.

--
Joachim Backes <joachim.backes@xxxxxxxxxxxxxx>
University of Kaiserslautern,Computer Center [RHRK],
Systems and Operations, High Performance Computing,
D-67653 Kaiserslautern, PO Box 3049, Germany
--------------------------------------------------
Phone: +49-631-205-2438, FAX: +49-631-205-3056
http://hlrwm.rhrk.uni-kl.de/home/staff/backes.html