Your mail 202.40.187.2:2809->87.238.46.8:25 contains contaminated file _From__Automatic_Email_Delivery_Software___MAILER_DAEMON_projects.lin__Date_8_May_2011_10:23:27__Subj_Returned_mail:_see_transcript_for_details_/mail.pif with virus Email-Worm.Win32.Mydoom.m,so it is dropped.