你好，
我使用windows server 2012 设置SMTP后无法发送邮件，有以下报错信息：
Unable to deliver this message because the follow error was encountered: "Error is processing file in pickup directory.".
The specific error code was 0xC00402CE.
The message sender was xxxx
我做了同样SMTP设置在windows server 2012 r2 上就正常发送，请问这两个版本设置有何不同
谢谢