testcase_dir/BDAT-0-LAST

   1 EHLO example.com\r
   2 MAIL FROM:<postmaster@example.com>\r
   3 RCPT TO:<postmaster>\r
   4 BDAT 102\r
   5 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\r
   6 BDAT 102\r
   7 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\r
   8 BDAT 0 LAST\r
   9 QUIT\r