[TYPO3-german] CHC forum theads without expiration

[Hoever, Martin (EXT-Other - DE/Germany - MiniMD)]

Hello,

can anyone give a hint, how to set the default expiration time
(currently obviously 200 days) for threads in CHC forum? I don't want
them to expire at all, but after 200 days they are gone even if the end
date is not set. The only place where it's mentioned that this could be
an option is the language file ;-) I spent the whole day searching ...

Can anyone help? 

Thanks,
Martin