Sync over GPRS falis after IP-change

[Mirici]

Hi,
I have the following problem with my HTC Tornado (WM6 – CE OS 5.2.19202). I’m using push mail over SSL with an Exchange 2003 Server. It has a dynamic IP, so I use dyndns.org. After every IP-change it’s not possible anymore to sync till I restart ActiveSync on the device, or enable, disable the flight mode.
When I used WM5 on the same device this issue was possible to fix by create the dword registry key:
HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Int ernet Settings\DnsCacheEnabled=0
But on my new WM6 ROM is has no effect anymore. Has anyone experience with that configuration, may be a newer will ROM fix it?

Greetings Mirici


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[Donald24]

Hi Mirici,

I think all WM6 devices have this problem with Exchange push-mail on dyndns-servers.
I ended up programming a restart activesync script on the device. (every 120mins)

Don

[rsw686]

Mail servers should not be run on dynamic IPs. Unless you are routing mail through another SMTP server you will have issues with reverse IP lookups and being blocked on dynamic IP blacklists.

If you can afford an SSL cert it should be easy enough to get a static IP. Or are you signing your own certs and installing root certificates on each WM device?

[Donald24]

If you use a relay-smtp-server from your ISP as a send-connector, blacklisting should not be a problem. I have no problems running my Exchange2007 or 2010RC on a dynamic IP.
Installing the SSL-certificates on the mobile devices must be done, but what has this to do with a fixed IP? I use my toplevel DE domain and cname it to my dynamic name.

This is a exchange-server for private use. In a company I would surely have a fixed IP, but for private use a fixed IP is too expensive, at least here in Germany.

Anybody has a solution for this not involving to script-kill this ActiveSync process? The repllog.exe must be killed when the IP changes, because it does only do a DNS-query ONCE in its runtime.

[sebi112]

I have the same problem with dyn. ip.
Im looking for a script or program that kills activesync when the serverconnection is lost an then restarts pushmail