Surely someone has to be having this issue..
When I am connected to wifi at the office my DNS server gives me an internal DMZ IP for my email server...when I leave and connect to wifi somewhere else or connect to cellular data I get a connection error. Regular internet works fine.
I believe this is because the OS is not flushing the DNS cache when the connection changes state.
If I reboot everything is fine.
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As a newbie with basic tech knowledge I will try to explain the problem as best I can.
Our office wi-fi has an internal DNS address that is not assessible externally. When exchange email is set up using our external DNS, email service works perfectly on 3G service. When the phone connects in the office to wi-fi we can't figure out how to set the internal DNS setting.
If we set the email server to the internal DNS setting, it works great on wi-fi in the office but does not connect via 3G. On a computer we can adjust using a host file to search for both options.
This is a stock phone. Is there somethig we are missing in set-up?
Thanks in advance.
Is your access point configured to issue addresses via DHCP ? If so then push the internal dns address out via that and resolve the server name to its inside address.
sdunne said:
Is your access point configured to issue addresses via DHCP ? If so then push the internal dns address out via that and resolve the server name to its inside address.
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I'll pass this on to my IT admin to see how our server is set up. Thanks for the tip, especially given it is your first post. Much appreciated.
I'll keep you updated.
Our address is static.
If I turn off wi-fi, email comes in fine over 3G with the external IP address. If I turn wi-fi on, it doesn't.
If I use the internal IP address, email comes in fine on wi-fi but not on 3G.
Anyone else heard of this issue?
Strange - tested with two iphones and they work okay both on 3G and wi-fi. They pick up the internal wi-fi DNS address. The SGS2 doesn't.
I am having problem connecting VPN over AT&T's 3G network. It will log-in and get IP address from VPN server. VPN server shows it is logged in. Connection stays connected.
However, I cannot access any resources over VPN connection. Cannot even get into router. (I'm running VPN server in my router running DD-WRT).
Tried pinging router from terminal, no response.
It works perfectly when I'm connected using Wi-Fi.
Any idea what is the problem and how to fix?
No one using VPN??
I'm trying to set up a Wifi with a static IP but NO gateway or DNS but until I enter a gateway and DNS the save button remains greyed out.
From a networking perspective, you should be able to have a Wifi connection without a gateway (This is true for all devices with multiple network connections) so that it uses an alternative connection (Mobile data in this case) but for some reason the Android devs seem to think otherwise.
The network I'm connecting to has no internet connection (Used for local connectivity only) so I need the phone to still use my mobile connection whilst connected. As Android turns off mobile data when connected to Wifi I was hoping I could leave the gateway blank to force it to use it's mobile connection when connected to this network but I can't
How can I either have mobile data on for just 1 SSID or save a connection with no gateway so it does use mobile (I tried 0.0.0.0 to no avail)?
Phone is a rooted HTC One M8 running Android 4.4.4
Hello,
I've had this problem for a while now, but it used to only apply to my schools wifi. After updating to Marshmallow it applies to every network.
When I try to connect to a wifi network the status changes to "connecting" and after a while it switches back to "saved" . When I try to connect again it doesn't do anything, the status remains "saved" , but the phone just won't connect to WiFi.
I've tried almost anything I could think of: static IP, resetting phone and router, turning on "use legacy DHCP client" (uses DHCP client from lolipop), a Factory reset, turning off "location" services and turning wifi on from airplane mode. The router's fine, no MAC-addresses have been blocked.
When I go to advanced wifi settings it does show the MAC address, but says "not available" for the IP. Even when I'm using a static IP the IP address won't show up in advanced wifi settings.
I really don't know what to do anymore, and was hoping someone here could help me. Any suggestions or help are more than welcome.
I have an LG G4 running stock Android 6. Been using the stock email client for years to connect to a google hosted email account, via their imap servers.
All of a sudden I get intermittent connectivity to imap.gmail.com over my wifi connection. The message 'The server is unavailable. Please try again" comes up all the time. If I turn on the Private Internet Access VPN the phoen connects fine, if I turn on cellular data - it connects fine.
I ran a trace route on the phone to imap.gmail.com and it gave me one hop which resolved to a Verizon host.
My desktop connects to the same servers and have not had email issues with it, seems isolated to the phone. So my thought is that there is not anything wrong with my local network here. The rest of the apps seem to work ok on the phone, so it doesn't seem to be a global wifi issue.
Any thoughts on further testing or ideas on what to try?
Some more diagnosis steps.
I installed K9 mail and it works fine.
I tried the native mail client app on another wifi connection without VPN and it worked.
I changed from imap.gmail.com to imap.googlemail.com and get the same result.
I am running out of ideas on things to check, beginning to think that I need to do another factory reset and see if that fixes the problem. Unless there is someway to adjust server timeout settings on the native client.
dman535 said:
I have an LG G4 running stock Android 6. Been using the stock email client for years to connect to a google hosted email account, via their imap servers.
All of a sudden I get intermittent connectivity to imap.gmail.com over my wifi connection. The message 'The server is unavailable. Please try again" comes up all the time. If I turn on the Private Internet Access VPN the phoen connects fine, if I turn on cellular data - it connects fine.
I ran a trace route on the phone to imap.gmail.com and it gave me one hop which resolved to a Verizon host.
My desktop connects to the same servers and have not had email issues with it, seems isolated to the phone. So my thought is that there is not anything wrong with my local network here. The rest of the apps seem to work ok on the phone, so it doesn't seem to be a global wifi issue.
Any thoughts on further testing or ideas on what to try?
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