Android phone not updating when inside astaro network

Hi,

I have an strange problem.

We have 2 Android phones on local wireless network inside Astaro Firewall. When moving out of the wireless zone (to mobile network) mail is updating and applications.

Seems like Astaro is stopping/interupting the updates/push notfifications.

Anyone with similar problem or suggestions to where start the troubleshooting. Its kinda annoying :)