邮件发送程序发送邮件时出错

错误：ERROR:CoremailSys:Your message was blocked by NetEase AntiSpam+.(KMAsyg7VMkNvycME.2.U.0)代码：
IdSMTP1.Host:=edit1.Text;
IdSMTP1.Port:=25;
IdMessage1.From.Address:=edit2.text;
IdMessage1.Recipients.EMailAddresses:=edit3.Text;
IdMessage1.Subject:=Edit4.Text;
IdMessage1.Body:=Memo1.Lines;
if fileexists(Edit5.Text) then
TIdAttachment.Create(IdMessage1.MessageParts,Edit5.Text);
try
  try
IdSMTP1.Connect(1000);
IdSMTP1.Send(IdMessage1);
Memo2.Lines.Add('发送成功！');
except on E:exception do
Memo2.Lines.Insert(0,'ERROR:'+E.Message);
end;
finally
if IdSMTP1.Connected then
IdSMTP1.Disconnect;
end;
end;
请教高手！！！！