Subject: Re: [vserver] networking issue zimbra vserver
From: Herbert Poetzl <herbert@13thfloor.at>
Date: Tue, 9 Dec 2008 14:23:55 +0100

On Thu, Dec 04, 2008 at 12:28:57PM +0100, randall wrote:
> dear all,
> 
> not sure if its Vserver related at all,
> 
> but i have a small issue with network throughput to a Vserver.
> 
> its a routed  with a 3 interfaces shorewall set up, eth0 net, eth1 lan 
> and dummy0 dmz where the vserver are with 192.168.2.xx addresses.
> 
> i have a samba file server in 1 of the vservers and i can get about 
> 80mbit measured connection from the LAN which looks good to me.
> 
> i have a zimbra vserver that is causing the problem where i can connect 
> from the LAN without any problem and everything does work only i can not 
> get more then about 50 kbit connection when connecting to imap, pop or 
> http so its horribly slow.
> 
> when using mutt for example from within the file server on the same host 
> the imap connection is blazingly fast as to be expected.
> 
> as far as i can see all traffic is routed correctly via shorewall and 
> there are no errors to be found in the zimbra logs so i'm stuck at the 
> moment and pretty clueless on what to look for.
> 
> i do have a similair zimbra setup and never seen this kind of behaviour 
> before.
> 
> anybody has a clue?

you are aware, that no packets will leave or arrive at dummy0?
i.e. your firewall setup handles that properly and uses 
interfaces eth0, eth1 and lo (accordingly)?

if not, add a log rule for every dropped/rejected packet
and fix up the rules first ...

HTH,
Herbert

> thanks for reading this anyway ;)
> 
> Randall
> 
> 
> 
>