OT: Bandwidth allocation for email

[John Van Ostrand]

On Tue, 2006-05-16 at 16:32 +0800, JM wrote:

> Hi ALL,
> 
> 	Does anyone of you knows to estimate bandwidth utilization for an email  
> server effectively?
> 
> given:
> 	2000 incoming total mails for 130 users.
> 	
> thanks,


I don't have accurate statistics on the total throughput. 

I know that my server deals with 26000 messages (8100 spam, 64 virus
mails) on a weekday, has 263 mailboxes (several are multi-drop pop
boxes). Message size total is 575MB (includes spam).

Now this is the message size, not the throughput. POP3 access could
double that (remove some spam, add protocol overhead) and relayed
messages would also add to that (SMTP in -> SMTP out). I had 11,350 POP3
accesses at 1.5k per access (with no message to download) is another
18.3GB

Based on this my estimate is that my mail server uses about 1.2GB per
day.


-- 
John Van Ostrand
         Net Direct Inc.
 
Chief Technology Officer
564 Weber St. N. Unit 12
   Waterloo, ON N2L 5C6 
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john-Da48MpWaEp0CzWx7n4ubxQ at public.gmane.org
        Ph: 519-883-1172
 ext.5102
Linux Solutions / IBM
Hardware
        Fx: 519-883-8533
 
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