帮忙分析一下日志：（谢谢）

mudeen

Feb 25 20:07:12 mudeen sendmail[17871]: h1PC6vN3017871: from=root, size=496, class=0, nrcpts=1, msgid=<200302251206.h1PC6vN3017871@mudeen.2233.org>, relay=root@localhost
Feb 25 20:07:16 mudeen sendmail[17873]: h1PC7FuI017873: from=<root@mudeen.2233.org>, size=719, class=0, nrcpts=1, msgid=<200302251206.h1PC6vN3017871@mudeen.2233.org>, proto=ESMTP, daemon=MTA, relay=mudeen [211.68.41.239]
Feb 25 20:07:16 mudeen sendmail[17871]: h1PC6vN3017871: to=mudeen@263.sina.com, ctladdr=root (0/0), delay=00:00:19, xdelay=00:00:03, mailer=relay, pri=30291, relay=mudeen.2233.org. [211.68.41.239], dsn=2.0.0, stat=Sent (h1PC7FuI017873 Message accepted for delivery)
Feb 25 20:08:47 mudeen sendmail[17875]: h1PC7FuI017873: to=<mudeen@263.sina.com>, ctladdr=<root@mudeen.2233.org> (0/0), delay=00:01:32, xdelay=00:01:31, mailer=esmtp, pri=30514, relay=smx.263.sina.com. [202.106.182.142], dsn=2.0.0, stat=Sent (\377\377\377\377\377\377\377\377 - mail sent ok)

请问最后一行是什么意思？（连续的\377）
我使用perl的MIME-Tools调用sendmail发邮件。日志如上。发给本域的服务器没问题，发给非本域的邮件出现如上信息。请大家指教。。