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Richard Spensley

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is there any way to limit the outgoing bandwidth of Kerio Mail Server? The reason I ask is because we are only a small company on an ADSL connection with 2MB download speed but only 256K upload speed (about 25kb/sec on average) and whenever we have large (over 5MB) emails or lots of medium sized emails going out, our internet connection (download speed) slows right down.

I was wondering if I could limit Kerio Mail Server to a maximum of around 20kb/sec outgoing then our connection would flow a bit better?

It may be that I need to make a change on our ADSL modem but it was installed by the ISP and we cannot access it. I have ordered a new one to replace it that we can tinker with so maybe this will be our solution but I thought I'd ask about KMS's capabilities anyway.

Thanks Smile
My IT Indy

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The best idea would be to get a router that provides QoS (Quality of Service) and prioritize the traffic you need to get out and put a lower score for non-essential traffic.

My IT Indy
Kerio Certified Reseller and Hosted Provider

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Are you running Windows on the server?

#1) Install QoS (don't know how, Google it.)
#2) Run %windir%\System32\tcmon.exe

Configure a QoS filter for port 25 as shown here;



You can apply this to specific destinations such as the IP's of your ISP's mail relay is that is what you use.

(photo's are also here if this doesn't work right;) png png

Anyway, this uses Windows built in QoS to rate limit SMTP on a particular machine. I'm doing this in XP PRO but most all should have this.

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