pic.relaybad

linux下qmail的源码 本人加了一些注释

qmail-smtpd     Receive message by SMTP from another host:
                   
                   MAIL FROM:<[e-mail]>
                   RCPT TO:<[e-mail]>
                
                Is $RELAYCLIENT set? No.
                Is irs.gov in rcpthosts? No.
                Reject RCPT.