sa-learn error.

[fchan]

I was trying to teach spamassassin 3.3.0 today with a rather large 
spam message and I got this error message when I did sa-learn:
Feb 11 14:47:51.262 [5414] info: archive-iterator: skipping large message
The message is 279959  bytes and about 20% is Russian text and other 
80% is two gif image attachment. Is there a way to increase this or 
some other method to allow me to learn large messages.

Thank you,
Frank