使用telnet測試郵件伺服器是否正常

使用telnet測試郵件伺服器是否正常 Java代碼[snp@date Flux]$ telnet anonymousrelay.chinacache.com 25  Trying 61.135.207.214...  Connected to anonymousrelay.chinacache.com (61.135.207.214).  Escape character is '^]'.  220 corp.chinacache.com Microsoft ESMTP MAIL Service ready at Wed, 14 Aug 2013 14:32:39 +0800  helo chinacache.com  250 corp.chinacache.com Hello [58.68.140.11]  mail from:<baozong.gao@chinacache.com>  250 2.1.0 Sender OK  rcpt to:<baozong.gao@chinacache.com>  250 2.1.5 Recipient OK  subject:anonymous relay  500 5.3.3 Unrecognized command  rcpt to:baozong.gao@chinacache.com  250 2.1.5 Recipient OK  data  354 Start mail input; end with <CRLF>.<CRLF>  subject:test mail  from:baozong.gao@chinacache.com  to:baozong.gao@chinacache.com  hello,  this is a test mail  .  250 2.6.0 <a4bf7399-60a6-49d1-9ef2-111d21fa7474@CC-EX07-CAS02.chinacache.local> Queued mail for delivery