neil4933
asked on
"Append these DNS suffixes"
Hello
We have many domains within our forests, and also some seperate forests, within our environment, mainly due to mergers etc.
There is a domain named domain1.forest.com. We also have heavily used domains :
domain2.forest.com
domain1.otherforest.com
domain3.forest.com
There is an application server within Domain1 named APP1. This needs to talk to another server named APP2 (also in Domain2). However, the seems to be frequent errors in the event log of APP1 saying that it can't communicate with APP2.
I went to APP1 and tried to ping APP2. I got a "ping could not find this host" error. So I tried to ping APP2.domain1.forest.com and this worked.
I went to the Advanced TCP/IP settings of APP1 and noticed that within "Append these DNS suffixes", the order was;
dmain1.forest.com (i.e. spelt wrong)
domain2.forest.com
domain1.otherforest.com
domain3.forest.com
Could this result in errors? What exactly does this setting do?
Both servers are Windows 2008.
We have many domains within our forests, and also some seperate forests, within our environment, mainly due to mergers etc.
There is a domain named domain1.forest.com. We also have heavily used domains :
domain2.forest.com
domain1.otherforest.com
domain3.forest.com
There is an application server within Domain1 named APP1. This needs to talk to another server named APP2 (also in Domain2). However, the seems to be frequent errors in the event log of APP1 saying that it can't communicate with APP2.
I went to APP1 and tried to ping APP2. I got a "ping could not find this host" error. So I tried to ping APP2.domain1.forest.com and this worked.
I went to the Advanced TCP/IP settings of APP1 and noticed that within "Append these DNS suffixes", the order was;
dmain1.forest.com (i.e. spelt wrong)
domain2.forest.com
domain1.otherforest.com
domain3.forest.com
Could this result in errors? What exactly does this setting do?
Both servers are Windows 2008.
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additionally, when you do not want this feature and when you do specify an fqdn, you can add the dot at the end of your query to disable this behavior. not after points, give them to @ded_ch
ASKER
Thanks, what if the application was coded for APP1 to contact APP2 by its FQDN anyway, when how would that order work then?
if there is a dot in the query, usually the dns suffixes will not be added.
i'm unsure about your case, so they may or may not be used, but the query will first be sent without the suffixes anyway so it should be harmless. you can make sure the suffixes are not used by configuring using fqdn suffixed with a dot
i'm unsure about your case, so they may or may not be used, but the query will first be sent without the suffixes anyway so it should be harmless. you can make sure the suffixes are not used by configuring using fqdn suffixed with a dot