无法从传输连接读取数据：net_io_connectionclose。
当我尝试发送电子邮件时，收到以下错误：
Unable to read data from the transport connection: net_io_connectionclosed.
当我在本地计算机上运行电子邮件时，电子邮件会发送，但一旦将其上传到 IIS，它就会停止工作。
下面是我的 web.config 文件中的邮件设置：
<system.net>
<mailSettings>
<smtp from="">
<network host="MyEmailServer" port="25" userName="" password=""/>
</smtp>
</mailSettings>
</system.net>
它似乎也可以在我的服务器上工作，但只是有时。
任何帮助将不胜感激，谢谢。
When I try to send an email, I receive the following error:
Unable to read data from the transport connection: net_io_connectionclosed.
The email sends when I run it on my local machine but as soon as I upload it to IIS it stops working.
Below is my mail settings in my web.config file:
<system.net>
<mailSettings>
<smtp from="">
<network host="MyEmailServer" port="25" userName="" password=""/>
</smtp>
</mailSettings>
</system.net>
It also seems to work on my server but only sometimes.
Any help would be appreciated, thanks.
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我找到了一个修复程序，如果将来有人看到这个问题，它可能会很有用。而不是：
I found a fix, could be useful if anyone sees this in the future. Instead of:
<network host="MyEmailServer" port="25" userName="" password=""/>I did:<network host="192.168.0.1" port="25" userName="" password=""/>Where 192.168.0.1 is the IP address of the server. Hope it helps