[WBEL-users] Rate Limiting

[Kirby Bohling]

On Fri, Jul 09, 2004 at 10:19:52AM -0500, Shackmaster wrote:
> Looking for suggestions here...
> 
> I have a mail server setup, that has been running on WBEL rock steady 
> for about a month now. The problem is that as use has grown, it has 
> begun to periodically spike and fill the T1 pipe that it sits on. We 
> plan to move the server onto an OC3 Sept 1st, but would like to rate 
> limit the traffic in the meantime.
> 
> Does anyone have a suggestion? Ideally I would like to rate limit SMTP 
> (ports 25 & 3535) seperately from POP (110 & 995).
> 

Well, I know that sendmail has rate limits dealing with load on the
machine built into it.

If you want to separately deal with those two, try looking at the
LARTC lists and webpages.  

Look here:

http://lartc.org/

	You can easily shape outbound (responses), in-bound (requests)
is quite a bit harder to shape on the machine, but you can throttle
it at the gateway (if I remember the description correctly, you
throttle it when it is going out the router's interface that faces
your network).  

	Either way, you can easily throttle the outgoing bandwidth.
However, until you know exactly what bits and bytes are being sent,
I'd be cautious until I found out exactly what was going over the
line.

	I've done the LARTC stuff before, the guy is generally pretty
helpful when I was actively reading the lists.  The cookbook section
is pretty handy in the HOWTO.  It's pretty hands on examples.

http://lartc.org/howto/lartc.cookbook.html
	
	Thanks,
		Kirby

	

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