bandwidth control for postfix??

taiwf · 03-27-2006, 07:42 PM

Hi,

I notice when many users within network sending attachment file (like 2-3Mb) on over email , the ping response time go from 100ms to 3xxx ms. Now is there a way to allocate certain bandwidth for postfix so user can still surf internet when some large emails is sending in process? I heard some ppl mentioned about Qos on linux but i know little about networking. Can someone help me out with this?

ps: my linux server is debain (sarge) with upload 256 bandwidth.

Chris

acid_kewpie · 03-29-2006, 04:03 AM

you would use the tc commands to rate limit outbound port 25 traffic. this is part of the traffic control tools, documented fully at http://lartc.org. You might prefer though to look at the "wondershaper" script: http://lartc.org/wondershaper/ which wraps tc and is designed to just make things good in general without requiring fine tuning for any setup, other than being told what your total bandwidths are