[Exim] "Possible pointer size being sent"

Hi list,

Does anybody know what this is about? From /var/adm/messages:

Apr 25 13:59:07 gemini.nr.no exim-4.02-7[4767]: [ID 943145 \
user.alert] WARNING: Possible pointer size being sent

Searched the list archives and the web, but no hits. I'm not
overly concerned, I'd just like to know what it means.

--
Regards,
Stian Grytoyr