Temporary failure in name resolution

Asterisk Asterisk Support
#1

I have an Asterisk server that I am trying to get set up with flowroute. I am able to get it to register and make incoming calls just fine. However, when I try to call out I am getting the message

 netsock2.c:303 ast_sockaddr_resolve: getaddrinfo("flowroute", "(null)", ...): Temporary failure in name resolution

I am following flowroute’s instructions from here

The place where I believe the problem is in extensions.conf at the outgoing context section

[outgoing]
exten => _1NXXNXXXXXX,1,Dial(SIP/${TECHPREFIX}${EXTEN}@flowroute)
exten => _NXXNXXXXXX,1,Dial(SIP/${TECHPREFIX}1${EXTEN}@flowroute)
exten => _NXXXXXX,1,Dial(SIP/${TECHPREFIX}1${AREACODE}${EXTEN}@flowroute)
exten => _011.,1,Dial(SIP/${TECHPREFIX}${EXTEN:3}@flowroute)

I have done a good bit of research on this issue, and it seems to be either DNS or a SIP issue from what I can tell (I am pretty new to this). My server(ubuntu 18.04) is able to resolve flowroute’s IP from the CLI with no issues.

What would be a good next step in debugging this? Is there a good way to test if this is DNS or something else? Any advice would be appreciated, this is all pretty new to me and I feel a bit over my head trying to get this set up

#2

How is your DNS finding out the full domain name for flowroute?

#3

Sorry not totally sure what you mean, I am able to resolve flowroute.com and sip.flowroute.com with an nslookup command

#4

But Asterisk was trying to resolve flowroute, not flowroute.com.

Web browsers might try appending .com and prefixing with (in their case) www., but that is a special case.

#5

That was the default from Flowroute’s documentation, I changed it to us-west-or.sip.flowroute.com and am still getting the same error

#6

I use Flowroute for outbound. My dial command looks like:

        exten = _1nxxnxxxxxx,5,         dial(sip/${TECHPREFIX}*${EXTEN}@flowroute,30,gr)

And the section in sip.conf:

[flowroute]
        canreinvite                     = no
        context                         = inbound
        dtmfmode                        = rfc2833
        fromdomain                      = us-west-or.sip.flowroute.com.
        host                            = us-west-or.sip.flowroute.com.
        insecure                        = port,invite
        qualify                         = no
        secret                          = xxxxxxxxxxx
        srvlookup                       = no
        type                            = friend
        username                        = xxxxxxxx

which is probably a bit of dead-wood, but it works for me.

#7

Okay, that seemed to do the trick. I think the thing I was missing was a context named flowroute. Just got my first outbound “hello world” to work! May seem miniscule but that’s super exciting for me. Thanks so much! Now to dive into the dialplan…

#8

If you are referring to this:

I think this is better named as a section – extension means something else.

#9

You may want to invest some effort in eliminating deadwood from my snippet – no need to propagate my laziness :slight_smile:

#10

By dead wood do you mean redundant lines that are default? I’m just happy to have this working, but I should read the docs and figure out what all of these values mean

#11

More like settings that are obsolete that I just copied from previous versions. Just see what you can eliminate and still have a working connection – and then tell me :slight_smile:

So should I…

#12

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