help! mail(), doest it really work???

Hello all, i am a new comer to php, and i downloaded php4 beta to start with... calling for trbl you would say, huh? but I like that... first script i try to run is : <?php $r=mail("mlrhazi@gltrade.fr", "Subject", "Line 1\nLine 2\nLine 3"); print "result from mail func was: $r"; ?> on the web page I get : result from mail func was: 1 Did I miss sth? in /usr/lib/php.ini I added : sendmail_path = /usr/lib/sendmail and calling sendmail from the command line does work : /usr/lib/sendmail -t to:mlrhazi@gltrade.fr subject:test line1 . # and I do recieve this email! the problem is that I see no debug info? no err msg? how do I trace it down? how do you guys debug your scripts? do you really use that debuging scheem described in the docs, over a tcp socket? I cant figuer out how to do it!! thanx alot for any hints LM~