question about hotmail and envelop sender

[Li Hong]

Greeting all!   here got 2 problem about qmail-send.   1.i setup my own email server several month ago but now some weird problem when Isend email to [EMAIL PROTECTED],following is error info return back my mail damon:   ------- <[EMAIL PROTECTED]>: 216.33.151.135 failed after I sent the message. Remote host said: 554 Transaction failed -------   when I try to telnet to hotmail, the result is the same.     why?     2.how could I set the envelop sender since I use qmail in my cgi script like open(MAIL,"|/usr/local/qmail/bin/qmail-inject [EMAIL PROTECTED]") || die $!; print MAIL "blah blah"; close(MAIL);   it seems NOT [EMAIL PROTECTED] but [EMAIL PROTECTED],how to change it?I've tried lwq and manpage but no file seems for it.     Thanks.