Mysterious characters at the end of E-Mail, received with socket in python

Mysterious characters at the end of E-Mail, received with socket in python

2024/10/14 17:20:57

I am not sure if this is the right forum to ask, but I give it a try.

A device is sending an E-Mail to my code in which I am trying to receive the email via a socket in python, and to decode the E-Mail with Messsage.get_payload() calls. However. I always have a \n.\n at the end of the message.

If the same device send the same message to a genuine email client (e.g. gmail), I get the correct original message without the \n.\n.

I would like to know what it is with this closing set of special characters in SMTP/E-Mail handling/sending, and how to encode it away.

Answer

As you would have seen if you looked up the SMTP protocol definition, a DATA section of a message transfer ends with <CRLF>.<CRLF>.

https://en.xdnf.cn/q/117935.html

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