Re: Yahoo is not using ESMTP

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This is interesting, because on our side of the world, when I do an analysis, I can see that mail is about 30% of the TCP traffic, with the web being about 40% of TCP traffic.

I guess we do not have the same needs over very slow links...

Cheers

stanislav shalunov wrote:
Fred Baker <fred@xxxxxxxxx> writes:

  
That is the ISP's choice. As a percentage of total volume,
SMTP/ESMTP is a small proportion of total traffic, or so please I
can read sample measurements (like
http://www.caida.org/dynamic/analysis/workload/sdnap/0_0_/ts_top_n_app_bytes.html)
would lead me to believe.
    

I can confirm this for a different network.

Email (which includes [E]SMTP, POP, IMAP, versions of these over TLS,
and such) comprises about 0.5% of the traffic on Abilene.  For
comparison, HTTP is about 15%.  (The ratio is almost exactly the same
as in the plot Fred cites.)

Even during weeks when there is an unusually large amount of SMTP
traffic because of email worms, we're still talking about 2% of
traffic being mail.

http://netflow.internet2.edu/weekly/

  

-- 
Franck Martin
ICT Specialist
franck@xxxxxxxxx
SOPAC, Fiji
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