jmail.SMTPMail 错误 '8000ffff'

[萤火架构]

错误：
jmail.SMTPMail 错误 '8000ffff'

554 Sender is rejected 3,mx15,wKjR4JEAlApNxm5EEjfVCg==.30584S2

/mail/mail/sendmailto.asp，行 111

源代码：
'发信
if request("mail")="owen" then
Set OWENmail=Server.CreateObject("JMail.SMTPMail")
OWENmail.Charset = "gb2312"
OWENmail.Sender = frommail..............................变量
OWENmail.Subject = mailsubject...........................变量
OWENmail.AddRecipient(""&tomail&"")
OWENmail.Body = mailbody..............................变量
OWENmail.Execute()..........................................行 111
OWENmail.Close
Set OWENmail = Nothing

[chinazhangshengen]

我用jmail4.4写的.这是最基本的页面.
<%
Set msg = Server.CreateObject("JMail.Message")
msg.silent = true
msg.Logging = true
msg.Charset = "gb2312"
msg.MailServerUserName = "[e-mail]" //输入smtp服务器验证登陆名 （邮局中任何一个用户的Email地址）
msg.MailServerPassword = "*******" //输入smtp服务器验证密码 （用户Email帐号对应的密码）
msg.From = "[e-mail]" //发件人Email
msg.FromName = "my" //发件人姓名
msg.AddRecipient"[e-mail]" //收件人Email
msg.Subject = "hello" //信件主题
msg.Body = "这是我第一次试验!!" //正文
msg.Send ("smtp.126.com") //smtp服务器地址（企业邮局地址
msg.Close()
set msg = nothing
response.write "邮件发送成功!!"
%>