我用telnet测试过了。结果如下 220 xxx.com.cn ESMTP MDaemon 10.1.1; Tue, 05 Nov 2013 15:44:30 +0800 ehlo www.xxx.com.cn 501 Invalid characters detected ehlo xxx.com.cn 250-xxx.com.cn Hello xxx.com.cn, pleased to meet you 250-ETRN 250-AUTH=LOGIN 250-AUTH LOGIN CRAM-MD5 250-8BITMIME 250 SIZE mail from zzh@yyy.cn 250 <zzh@yyy.cn>, Sender ok rcpt to lxb@xxx.com.cn 250 <lxb@xxx.com.cn>, Recipient ok data 354 Enter mail, end with <CRLF>.<CRLF> subject:test
this is a test mail. . 554 Message is not RFC compliant