Some strange behavior is noted on my server and I require your help because I am lost and do not know how to start investigating this. My server is set up for debian 5 according to the tutorial. When I send an email through kmail (local client) my email is delivered to spam folder for gmail or yahoo. On the other hand when I use the web interface at the server (squirrel mail) my email is delivered normally. This did not happen before and the only thing I did was restarting my server today. Do you have any suggestion on where to start investigating this?