[python-win32] Failing to email large attachment with Python on Windows XP*Tim Roberts* timr at probo.com <https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=python-win32%40python.org&su=Re%3A%20%5Bpython-win32%5D%20Failing%20to%20email%20large%20attachment%20with%20Python%20on%0A%20Windows%20XP&In-Reply-To=%3C511BD1FA.7010700%40probo.com%3E> *Wed Feb 13 18:48:42 CET 2013*
- Previous message: [python-win32] Failing to email large attachment with Python on Windows XP<http://mail.python.org/pipermail/python-win32/2013-February/012717.html> - *Messages sorted by:* [ date ]<http://mail.python.org/pipermail/python-win32/2013-February/date.html#12718> [ thread ]<http://mail.python.org/pipermail/python-win32/2013-February/thread.html#12718> [ subject ]<http://mail.python.org/pipermail/python-win32/2013-February/subject.html#12718> [ author ]<http://mail.python.org/pipermail/python-win32/2013-February/author.html#12718> ------------------------------ newtechnologybooks wrote: >**>**>* I'm struggling with sending a 100mb text file using Python running >on*>* a Windows XP client.*>** >> I do not doubt it. Most SMTP servers block attachments that large. Basically, I agree, but I'm using the Python SMTP server that does not limit the payload size. >* I was able to deliver 20mb files with this script, but failed when*>* trying >100mb files.* >> That's further evidence that you have hit a server limit. If you want >> to send 100MB files, you store them on an FTP server or a web server and >> send a link. Companies do not want 100MB attachments clogging up their >> mail pipe and bulking up their mail store. On my network sniffer I don't see any evidence that the code has start sending any kind of data to the sever, it just hang for a few seconds till the client send a FIN flagged packet to the server. I agree that it's is not a common use case for, but my code is used for testing a flow that works with our corporate clients (and the client does not experience any errors when sending such a large files). >* It seems the code runs smoothly when I'm removing this line which*>* encoded >the part as base64:*>**>* Encoders.encode_base64(part)*>** >> That increases the size of the attachment by another 33%. That's true, but then again I do not have any limitation on the corporate server size, nor on the Python test server. >**>* I've notice the problem only occurs on my Windows XP, cause I was able*>* >to use the same code for delivering a 100mb file on a Windows 7 client.*>** >> To the EXACT SAME SERVER? Or were you testing a different server? I've tried the same code with 3 different servers and got the same results of the client dropping the connection before trying to send a single byte of data.
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