我写的这段程序在本地运行很顺畅。能发送，为什么我上传到服务器上了之后就发不出去了呢。
老是提示：
The message was undeliverable. All servers failed to receive the message .execute() { Trying server mail:smtp.163.com smtp.163.com failed with the message: "WSAGetLastError() returned 10053, Software caused connection abort" No socket for server. ConnectToServer() 1 of 1 servers failed }

请问是什么原因。是否是 端口问题

服務器裝了JMAIL.DLL沒有呀？/
或許沒有打開郵件端口吧。。