Re: Yahoo is not using ESMTP

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(_at_)cisco(_dot_)com> 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(_at_)sopac(_dot_)org
SOPAC, Fiji
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