主题：关于MailSender

通过openqq的功能我想实现自动发送邮件，我在客户端的ReceivedMessage事件中写了如下代码：

Dim m As New MailSender
Dim ln As String = vbcrlf & vbcrlf '定义两个换行
m.Host = "smtp.21cn.net"
m.Account = "xiaoliu"
m.Password = "xiaoliu1234567"
m.From = "xiaoliu@Sina.com.cn"
For Each dr As DataRow In DataTables("借款").Select("到期日期<= #" & Date.Today.AddDays(10) & "#")
    m.To = dr("邮件地址")
    m.Title = "催款通知"
    m.Content = dr("姓名") & dr("尊称") & ":" & ln & "您的贷款将于" & dr("到期日期") & "到期, "
    m.Content = m.Content & "金额为" & dr("金额") & "元, 请准时还款!" & ln & "某某公司" & vbcrlf & Date.today
    m.SendAsync()
Next
但是有错误，

此主题相关图片如下：qq图片20160103174608.png