smtp log中rcpt報錯，知道的都進來

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10:22:15 221.169.27.116 HELO - 250<br>
10:22:15 221.169.27.116 MAIL - 250<br>
10:22:16 221.169.27.116 RCPT - 550<br>
10:22:16 221.169.27.116 QUIT - 240<br>
10:22:57 221.169.27.116 HELO - 250<br>
10:22:57 221.169.27.116 MAIL - 250<br>
10:22:58 221.169.27.116 RCPT - 550<br>
10:22:58 221.169.27.116 QUIT - 240<br>
10:23:23 61.31.147.150 HELO - 250<br>
10:23:23 61.31.147.150 MAIL - 250<br>
10:23:23 61.31.147.150 RCPT - 550<br>
10:23:23 61.31.147.150 QUIT - 240<br>
10:23:35 221.169.27.116 HELO - 250<br>
10:23:35 221.169.27.116 MAIL - 250<br>
10:23:35 221.169.27.116 RCPT - 550<br>
10:23:36 221.169.27.116 QUIT - 240<br>
10:23:56 221.169.27.116 HELO - 250<br>
10:23:56 221.169.27.116 MAIL - 250<br>
10:23:56 221.169.27.116 RCPT - 550<br>
10:23:57 221.169.27.116 QUIT - 240<br>
10:24:11 221.169.27.116 HELO - 250<br>
10:24:11 221.169.27.116 MAIL - 250<br>
10:24:12 221.169.27.116 RCPT - 550<br>
10:24:12 221.169.27.116 QUIT - 240<br>
10:24:20 61.229.27.82 EHLO - 250<br>
10:24:22 61.229.27.82 MAIL - 250<br>
10:24:22 61.229.27.82 RCPT - 550<br>
10:24:23 61.229.27.82 QUIT - 240<br>
10:24:31 218.17.73.52 EHLO - 250<br>
10:24:31 218.17.73.52 MAIL - 250<br>
10:24:32 218.17.73.52 RCPT - 550<br>
10:24:32 218.17.73.52 QUIT - 240<br>
10:25:28 221.169.27.116 HELO - 250<br>
10:25:28 221.169.27.116 MAIL - 250<br>
10:25:29 221.169.27.116 RCPT - 550<br>
10:25:29 221.169.27.116 QUIT - 240