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A環境:

Skype for Business Server 2015，前端服務器、持久聊天服務器、邊緣服務器。

與MSN、Skype、O365聯盟，IM、音頻和視頻正常。

A與B聯盟，A能看B的狀態，能發消息給B，B能有回消息，看不到A的 狀態。

B環境:

Skype for Business Server 2015，前端服務器、持久聊天服務器、邊緣服務器。

與MSN、Skype、O365聯盟，IM、音頻和視頻不正常。

A與B聯盟，A能看B的狀態，能發消息給B，B能有回消息，看不到A的 狀態。

問題：

Skype for Business Server 2015，前端服務器、持久聊天服務器、邊緣服務器。

與MSN、Skype、O365聯盟，IM、音頻和視頻不正常。

A與B聯盟，A能看B的狀態，能發消息給B，B能有回消息，看不到A的 狀態。

解決方案：

1. 增加C環境

2. 測試C環境與A、B

3. 發現A與C正常

4. 發現A與B不正常

5. 發現C與B不正常

6. 發現A與B，C與B，問題一樣

A與B聯盟，A能看B的狀態，能發消息給B，B能有回消息，看不到A的 狀態。

C與B聯盟，C能看B的狀態，能發消息給B，B能有回消息，看不到C的 狀態。

問題出在B上， 檢查B上設置。同。

TL_INFO(TF_PROTOCOL) [Pool\SkypeSrv15-IP06]0C4C.BDDC::01/21/2017-05:12:54.578.0002B968 (SIPStack,SIPAdminLog::ProtocolRecord::Flush:ProtocolRecord.cpp(261)) [2166602313] Trace-Correlation-Id: 2166602313
Instance-Id: 5D2
Direction: outgoing
Peer: 192.168.1.6:51425
Message-Type: response
Start-Line: SIP/2.0 504 Server time-out
From: "............03-(...............)-OA"<sip:sales03@contoso.com>;tag=c5a4c97016;epid=2c401f2a22
To: <sip:sfbdemo01@i-x-cloud.com>;tag=345733AABF1549BBA3E4E1E2A5406FD1
Call-ID: 7e9210ed5ff044438925c226a4f2f7ea
CSeq: 1 SUBSCRIBE
Via: SIP/2.0/TLS 192.168.1.6:51425;ms-received-port=51425;ms-received-cid=100
Content-Length: 0
ms-diagnostics: 1008;reason="Unable to resolve DNS SRV record";domain="contoso.com";dns-srv-result="NegativeResult";dns-source="InternalCache";source="sip.contoso.com"
Authentication-Info: TLS-DSK qop="auth", opaque="4556B265", srand="B338FE87", snum="81", rspauth="383e05e98238d9c67c9e3829b0cd41a94a62632e", targetname="SkypeSrv15-IP06.contoso.local", realm="SIP Communications Service", version=4
Server: RTC/6.0

$$end_record

TL_INFO(TF_PROTOCOL) [Pool\SkypeSrv15-IP06]0C4C.BDDC::01/21/2017-05:12:54.578.0002B960 (SIPStack,SIPAdminLog::ProtocolRecord::Flush:ProtocolRecord.cpp(261)) [2166602313]

Trace-Correlation-Id: 2166602313

Instance-Id: 5D2

Direction: incoming

Peer: EdgePool01.contoso.local:5061

Message-Type: response

Start-Line: SIP/2.0 504 Server time-out

From: "............03-(...............)-OA"<sip:sales03@contoso.com>;tag=c5a4c97016;epid=2c401f2a22

To: <sip:sfbdemo01@i-x-cloud.com>;tag=345733AABF1549BBA3E4E1E2A5406FD1

Call-ID: 7e9210ed5ff044438925c226a4f2f7ea

CSeq: 1 SUBSCRIBE

Via: SIP/2.0/TLS 192.168.1.6:52981;branch=z9hG4bKD2246EB8.5F7C6012EE61B306;branched=FALSE;ms-received-port=52981;ms-received-cid=4500

Via: SIP/2.0/TLS 192.168.1.6:51425;ms-received-port=51425;ms-received-cid=100

Content-Length: 0

ms-diagnostics: 1008;reason="Unable to resolve DNS SRV record";domain="contoso.com";dns-srv-result="NegativeResult";dns-source="InternalCache";source="sip.contoso.com"

ms-edge-proxy-message-trust: ms-source-type=EdgeProxyGenerated;ms-ep-fqdn=EdgePool01.contoso.local;ms-source-verified-user=verified

Server: RTC/6.0

$$end_record

從以上可以看出，DNS的SRV記錄有問題，但：

內部與外部域名一致的時候，與其它SFB聯盟，只需要公網上面新建SRV記錄才可以。

目前環境，SFB的內部域名，外部域名不一致，這與其它公司的SFB聯盟就報上面的問題。

通過查詢了好多文檔，結果終于找到一個可以參考的。

No Presence for Fedrated partners – Event ID 11

https://ucsorted.com/2016/06/08/no-presence-for-fedrated-partners/

內部SRV:

在內部要為公網的聯盟新建SRV記錄，才可以!

內外域名不同的SFB環境與其它企業的SFB環境聯盟:

內外域名不同的SFB環境與其它企業的o365聯盟:

完成!!!

No Presence for Fedrated partners – Event ID 11

Posted on 08/06/2016 by Paul B

i

1 Vote

Problem

Came across a deployment with the following 2 issues:-

1. federated partners were showing up as presence unknown

2. unable to call voicemail (hosted in O365)

When trying to send messages to these “unknown” federated partners I got “This message wasn’t sent due to company policy”.

So why did I try to message a contact with a presence status of “unknown? Simply because the federated contact could see my users presence and send me IM’s, I was even able to respond to these IM’s although the presence was still “unknown”.

Troubleshooting

A quick look at the client side logs revealed an error in the presence Subscribe message

CSeq: 1 SUBSCRIBE
Via: SIP/2.0/TLS 172.11.12.13:24164;ms-received-port=24164;ms-received-cid=FC9300
ms-diagnostics: 1008;reason=”Unable to resolve DNS SRV record“;domain=”ucsorted.com”;dns-srv-result=”NegativeResult”;dns-source=”InternalCache”;source=”access.ucsorted.com”
Server: RTC/6.0
Content-Length: 0

Taking a look at the users (client side) local event log I found the same error.

Event ID 11
A SIP request made by Lync failed in an unexpected manner (status code 80ef01f8).

Response Data
504 Server time-out
ms-diagnostics: 1008;reason=”Unable to resolve DNS SRV record“;domain=”ucsorted.com”;dns-srv-result=”NegativeResult”;dns-source=”InternalCache”;source=”access.ucsorted.com”;OriginalPresenceState=”0″;CurrentPresenceState=”0″;MeInsideUser=”No”;ConversationInitiatedBy=”6″;SourceNetwork=”5″;RemotePartyCanDoIM=”Yes”

Clearly there is some issue with either the federation SRV record or resolving the federation SRV record.

Checking the SRV record from the Edge server I can see that this record is not found. Checking the DNS for the Edge server I noticed that the interfaces are pointing to the internal DNS servers.

Solution

We have 2 options here:-

1. Configure the Edge Server to point to a public (external) DNS server where the SRV record for _sipfederationtls._tcp.domain.com is valid (frowned upon by some security folks)

2. Add the SRV record for _sipfederationtls._tcp.domain.com to the internal DNS, making sure that the target FQDN is the Public Access FQDN of the Edge Server.

NOTE

Here is a little reason why you may want to avoid using the common sip.domain.com DNS name for your Edge Servers Access FQDN (only..). Internally the sip.domain.com record was generally configured to resolve to the front end pools, if we now need an internal SRV record for _sipfederationtls._tcp.domain.com then targeting this to sip.domain.com will simply get to the Front End Pool and not to the Federation point at the Access Edge FQDN.

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×××以下IT服務：

A. 項目

Lync Server 2013項目規劃、部署、運維、排錯。

Skype for Business Server 2015項目規劃、部署、運維、排錯。

大企業云桌面部署規劃、部署、運維、排錯。

小微型企業的Cisco UC項目規劃、部署、運維、排錯。

小微型企業的IT規劃、部署、運維、排錯。

B. 培訓

/《Skype for Business 2015 項目實戰》

/ 《跟菜鳥學Cisco UC部署實戰》

/ 《大企業云桌面部署實戰》

《跟菜鳥學Cisco UC部署實戰》-上線了（線下培訓班開班，見百度云）

http://dynamic.blog.51cto.com/711418/1834588

C. 費用

歡迎溝通，咨詢。

D. 聯系方式

咨詢QQ: 3313395633

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