Icewarp Merak Mail Server Failures in OpenVZ

[cwhortn]

I realize this may not be the most targeted forum for this, but any help from anyone would be appreciated.

I am trying to run Icewarp 9.4.0 for Linux (www.icewarp.com) in a Proxmox VE OpenVZ container. After the bare metal ISO install, I uploaded into VE the CentOS 5.2 template I downloaded from Proxmox's site. I created a Virtual Network based container and installed the MySQL libraries required for Icewarp and then installed Icewarp itself. Installation is fine. The problem I'm having is the services (IMAP, POP, Web) get interrupted and timeout for no apparent reason. For example, the web admin will load its frameset but the frames themselves have connect errors and IMAP will time out transfering an email with a 500k attachment or more.

I've now tested this on 3 physical hosts with Proxmox and all results are the same. When no virtualization is in use I don't have these issues. Any ideas on how to diagnose/fix? Anyone else run across this problem? Any other linux based mail servers with domain administration capabilities you can suggest?

Thanks,
Carl Horton

 

[dietmar]

Maybe you hit a resource limit (tried to give more RAM?)

Take a loock at

# cat /proc/user_beancounters

(last column is an error count)

- Dietmar

 

[cwhortn]

Maybe you hit a resource limit (tried to give more RAM?)

Take a loock at

# cat /proc/user_beancounters

Thank you for the tip Dietmar, but the failed counts are all 0. I have given this VM 2 GB of RAM and 512MB Swap. Right now, I'm testing only one mail account and I get the errors previously described.

Do you think if I recreated the VM with a bridged connection it may make a difference?

Thanks,
Carl

 

[dietmar]

Do you think if I recreated the VM with a bridged connection it may make a difference?

I do not know that software, sorry. But you can give it a try.

Isn't there any error message in the logs?

 

[cwhortn]

I do not know that software, sorry. But you can give it a try.

Isn't there any error message in the logs?

There is nothing in any system logs I can see and Icewarp's log mentions only "Incomplete Session" when IMAP timesout.

I've been trying to get the most basic Bridge connection in place but honestly I have not figured out how to do it. Using vmbr0 and setting my CentOS guest IP the same way I do on physical machines has not worked.

I've read:
http://pve.proxmox.com/wiki/Network_Model
and
http://wiki.openvz.org/Differences_between_venet_and_veth

Is there a step by step Proxmox oriented HOWTO for this?

Thanks for all your help.

Bests,
Carl Horton

 

[dietmar]

Does it work with a KVM VM?