Strange text Error in Plesk interface

[3ASistemi]

Hi,
when i open admin or user plesk interface, under "domain" configuration, i can see this text error message :

Notice: Undefined index: max_spam_threads in C:\Program Files\Parallels\Plesk\admin\plib\class.cObject.php on line 78

My configuration : fresh windows 2003 web edition installation, fresh plesk 9.2.1 installation, merak 9.4.2

Can i remove this text error ?

 

[thomas84]

I soo show the same this error on my panel. Please help me.

 

[PaulC]

If you look at the "Settings" section of Plesk, then into "Mail Server Settings" and then the "Spam Filtering" tab, what do you see?

You should see a box "Number of threads that spam filter can create". Is this greyed out and says "unavailable" next to it?