Non-Exchange Mail Access through Corporate Wifi

Posted on 2012-09-05
Last Modified: 2013-03-26
We have a number of wireless devices (mostly Android, but possibly one or two iPhones) that connect to our corporate wireless network and note similar issues:
Non-Exchange (e.g. Gmail, Hotmail) accounts do not automatically sync while connected to the corporate wifi network
Some devices allow for manual sync while others won't sync at all
Sync works properly when on 3G/4G networks and when on other wifi networks
After taking one device, assigning it a static IP, and opening it up entirely through the firewall, autosync does seem to work (albeit perhaps a bit slowly?)
All mail services are accessible through their respective web interfaces

This all suggests to me that it's a simple port issue in the firewall, but I can't find information on which specific ports need to be opened.  Any thoughts?  Thanks in advance!
Question by:pcamis
    LVL 13

    Expert Comment

    by:Molnar István
    Make sure your device is not in Airplane mode.
    Make sure your device has a working signal.
    Verify that your device can get online (try going to a website in your mobile Browser)

    hope it helps

    Author Comment

    Thanks quicksilver17... no luck on any of them.  Not in airplane mode, definitely a working signal, and definitely a valid data connection over wifi (Exchange notifications still arrive... Gmail syncs when I go into the program and click the refresh button... web browsers, Google Play, etc. all still work properly).  No luck with the linked article either - sync is definitely enabled.

    Fairly certain it's a firewall issue because on my Android device (Verizon Galaxy S3) I receive no Gmail notifications while using a DHCP supplied IP address on our corporate wifi.  However as soon as I switch to the static IP that has a free shot through the firewall, the new message notification comes right up.
    LVL 13

    Accepted Solution

    -on your router, do you have mac filtering for the wifi. if yes add your mac address.
    -to use a static IP for your WiFi connection, to do this:
    From your android device, goto Settings > Wireless and networks > WiFi Settings > Click menu button (left) and select advanced.
    You'll see an option "use static IP" under IP settings section. Enable it and enter the following parameters.
    for ex.:
    IP address :
    Dns2 :
    -i'm not sure, but you can try to add 995/587( port for hotmail) in portforwarding section in router

    Author Closing Comment

    Never found time to finish investigating the issue - appreciate the help provided, though!

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