I have seen this due to the public IP of the server changing.  Then I set up a backup server at a different location and configured the backup in the RTCM's, then it was not an issue, everything kept working until the information of the changed IP propagated to everything.  Be sure that you have the dyndns set for a low TTL so that the different IP will be propagated sooner rather than later.
Chuck

On Thu, Jun 4, 2015 at 3:23 PM, Tim Sawyer <tim.sawyer@mac.com> wrote:
Never have tried to run a server behind a changing IP. Guess I’m not too surprised the RTCMs are having an issue with that. I’d bet there is nothing wrong with your setup. It can take a while for the new IP to propagate. 

One thing that may not be related is the port that RTCMs use (667) is considered a trojan by some ISPs. I’ve seen it get blocked at random times and you have to turn off the RTCM for a while at which point the ISP will automatically unblock it. That may not be your issue but just for the heck of it try another port. I use one of the IRLP ports when this comes up. 
--
Tim
:wq

On Jun 4, 2015, at 9:29 AM, Tammy <tammjo9876@aol.com> wrote:

I have 6 rtcm setup along with a URI right now everything works great until my ISP goes down or  reboot my router where  (not modem) my server is located at.  then the RTCM will not work until I reboot the RTCM or the routers that they are located at I was wondering if any one can help to see what I have done that would be causing this issue.  I don't have a static IP but using DYN server to correct the ip when it changes.  everything works fine if I reboot the routers where the RTCM are located or reboot each of the  RTCM  any one else have this problem and is there a cure._______________________________________________
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