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.cn501 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.cn250 <
zzh@yyy.cn>, Sender ok
rcpt to
lxb@xxx.com.cn250 <
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