Service Record in DNS starts with an underscore _

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gcsmithsr Author

Level 1

8 points

Service Record in DNS starts with an underscore _

How do I add a Service Record in DNS when the name of the service record starts with an underscore _ ?

Mac mini, OS X Yosemite (10.10.2)

Posted on Feb 18, 2015 8:08 AM

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Answer 1

Feb 19, 2015 3:52 AM in response to gcsmithsr

I believe there are some types of service record pre-defined but otherwise probably you are going to need to hand edit the DNS files.

Look in /private/var/named for the files, the one you are looking for will be something like db.domain.com an example entry would look like -

_autodiscover._tcp.domain.com 10800 IN SRV 0 0 443 mail.domain.com.

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Answer 2

gcsmithsr Author

Level 1

8 points

Feb 19, 2015 7:52 AM in response to gcsmithsr

Thanks John, Good direction! I will take a look.

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Answer 3

gcsmithsr Author

Level 1

8 points

Feb 19, 2015 9:55 AM in response to John Lockwood

John,

Your direction was helpful, but at this point unable to locate the entry to edit. Attached is a screen shot. Can you suggest a folder that may contain the entry?

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Answer 4

Feb 19, 2015 12:14 PM in response to gcsmithsr

Ah, Apple have moved the files with Yosemite/Server 4.x they are now in /Library/Server/named/ it would probably be best to edit the file in Terminal.app.

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Answer 5

gcsmithsr Author

Level 1

8 points

Feb 19, 2015 2:56 PM in response to John Lockwood

Found it!. Do you know if it can be edited in text editor? (Way too easy..)

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Answer 6

Feb 19, 2015 6:22 PM in response to gcsmithsr

The permissions on this file (and the others) means that even admin level users cannot write to it. You have to use sudo level access in Terminal to be able to modify it.

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