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Hosted Multitenant 'call rejected' when using DNS name

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purpleone

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I'm currently testing the new Multi tenant version of 3cx, works great. As its a hosted system ALL extensions register externally and use STUN.

If on the server under 'Public IP' I set it as its physical IP address and then register the handset (in this case I'm using the 3CX for iPhone), everything works fine - incoming and outgoing calls work.

But, if the 'Public IP' is set to the servers external DNS name, and the phone registers using the DNS name, the phone can receive calls, but outgoing calls show the below error:


23:50:45.459 [CM502001]: Source info: From: "DemoPBX"<sip:[email protected]:14060>;tag=ZusG3SnRdMNjF85psB7bcW2bR-.3yuP8<sip:[email protected]:14060>
23:50:45.459 [CM503013]: Call(3): Incoming call rejected, caller is unknown; msg=SipReq: INVITE [email protected]:14060 tid=PjIPVthsGgd.lZaoq1ENLtVhBioG-0PZer cseq=INVITE [email protected]:57036 / 27590 from(wire)
23:50:45.301 [CM500002]: Unidentified incoming call. Review INVITE and adjust source identification:
INVITE sip:[email protected]:14060 SIP/2.0
Via: SIP/2.0/UDP 114.xxx.xxx.xxx:57036;rport=57036;branch=z9hG4bKPjshwrekA2a4G8mYsZCpBos41E2I9YajyR
Max-Forwards: 70
Contact: "DemoPBX"<sip:[email protected]:57036;ob>
To: <sip:[email protected]:14060>
From: "DemoPBX"<sip:[email protected]:14060>;tag=ZusG3SnRdMNjF85psB7bcW2bR-.3yuP8
Call-ID: AW6GtJwvQVlJZoURY6dZ5b6FBOevDANk
CSeq: 27589 INVITE
Session-Expires: 1800
Min-SE: 90
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS
Supported: replaces, 100rel, timer, norefersub
User-Agent: 3CXPhone for iPhone 1.1.4
Content-Length: 0


Can anyone see what might be causing the issue?
 
Found the problem. I had added the setting for DNS in 'Public IP' under Network, but also have to add the DNS setting for 'Local SIP domain' under advanced.

Hope this helps some one else.
 
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