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Cannot find server or DNS error (UE:20002)

Posted: Sun Apr 15, 2007 7:31 pm
by Paladin
Hi, just FYI; I have been getting a lot of errors using the search as of late.
This has been on and off for over a week. I cannot remember it may be longer. I usually try again later and it works but it has been down more than up.

I get the error:

Search Failed
Cannot find server or DNS error (UE:20002)

EDIE: Nope, I am still getting this at times.

Posted: Tue Apr 17, 2007 2:55 am
by alex
check your firewall, maybe it blocks dns requests.

you may try to put the server ip instead of the server name directly into properties->general->search/import, find ip e.g. through resolving the server name through some online dns resolver, the ip didn't change for a year so it is pretty invariable, but it may change since formally it is not a static ip.

e.g. use

http://network-tools.com

you can verify there the dns is resolved properly.

Re: Cannot find server or DNS error (UE:20002)

Posted: Thu Jun 16, 2011 5:44 am
by wendoxin
Why they keep DNS server and Mail client Server is placed outside the intranet of a company? Is there any particular reason to place the DNS server and Mail client Server outside of a company what would be a validate of the above problem?
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Re:

Posted: Sat May 18, 2013 6:51 am
by Terry
Right now I'm getting a lot of DNS errors.
8 out of 10 times I get the DNS error. I didn't change any firewall setting in between searches.

alex wrote:you may try to put the server ip instead of the server name directly into properties->general->search/import, find ip e.g. through resolving the server name through some online dns resolver, the ip didn't change for a year so it is pretty invariable, but it may change since formally it is not a static IP.
Alex, is that option still available in v4.4?

Re: Cannot find server or DNS error (UE:20002)

Posted: Wed May 29, 2013 8:12 am
by alex
Normally it should work, I don't experience problems searching from 3 completely different locations and servers have search counters which more or less the same, so it doesn't appear that particular server location is affected.

There may be an issue with routing from your location to one search service location, look what server number it shows in the error message if random numbers only in one range of those two: (1) to (4) / (5) to (9) this is likely the case.

Re: Cannot find server or DNS error (UE:20002)

Posted: Wed May 29, 2013 8:22 am
by Terry
It's not a structural problem but sometimes the error pops up often for an hour.
If it's really a proble with a DNS server entering the IP may be the easy solution.

Re: Cannot find server or DNS error (UE:20002)

Posted: Wed May 29, 2013 8:28 am
by alex
look at the number it shows it in parentheses.

e.g.

Search failed (2)

Search failed (5)

if the number is only in one of those two ranges 1 to 4 or 5 to 9 it may be some routing problem not related to your setup. if you see numbers in both ranges e.g. when you make searches you see one time (3) and another time (7) it is probably something on your side.