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Python performance with SMTP-Relay script

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I have to write a small SMTP-Relay script (+ some statistic infos) and I'm wondering, if this can be done in python (in terms of performance, of course not in terms of possibility ;) ).

It has to handle around 2000 mails per hour for at least 8hours a day (which does not mean, that it is allowed not to respond the rest of the day.

Can this be done? or should I better use some other programming language? My second choice would be erlang.

posted Aug 2, 2013 by Deepak Dasgupta

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1 Answer

+1 vote

I suspect it depends on a lot of factors:

  • will your network connection support that much traffic? (And an ISP that will grant you permission to spew that volume of email?)

  • are these simple text emails, or are they large with lots of attachments, inline images, PDFs, or whatever?

  • are the statistics that you're gathering simple, or do they require complex analysis of the documents passing through?

  • is the load 8hr straight of spewing email, or is it bursty? If it's bursty, you can internally queue them up when load gets high, delivering them from that queue when load diminishes. Given the store-and-forward nature of email, there's no guarantee that if you spewed them at ~33/minute (that/s a little faster than one
    every two seconds), they'd arrive at their destination any faster than if you'd queued them up and sent them at a more steady rate.

That said, sending ~33 text emails per minute doesn't seem impossible, it just depends on your configuration (network, DNS, and receiving SMTP server(s) throttling/setup)

answer Aug 2, 2013 by Majula Joshi
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