We have two domains with AD two-way trust and Exchange GAL synchronization done via Forefront identity Manager 2010. We have a problem with meeting room reservation, user from domain A is trying to book meeting room from domain B (there is a contact object in domain A for this meeting room from domain B). The problem is that such room is not sending response confirmation email to user and meeting room is visible as tentative. I already found https://social.technet.microsoft.com/Forums/exchange/en-US/298ee741-3293-438c-bd2d-edc33d1aa408/unable-to-book-meeting-rooms-from-trusted-forest-rooms-are-tentative?forum=exchange2010
and set "externally secured" option on receive connector in domain B (exchange 2010 server). This didn't resolve our issue. How to troubleshoot it?
Domain A: one exchange 2013 server
Domain B: one exchange 2010 server (meeting rooms hosted in db on this server) and 3 exchange 2013 servers in DAG, prepared to migrate mailbox db from 2010 server
Here is a message header from normal email sent from domainA to domainB - I am wondering what IP scope (private IP address of exchange server from domainA: 192.168.128.235 or public IP address of ironport from domainA 62.xxx.xx.10) should be set for receiver
connector in domainB
Received: from 312EX.domainB.com (172.16.64.143) by 316EX.domainB.com (172.16.64.231) with Microsoft SMTP Server (TLS) id 15.0.995.29 via Mailbox Transport; Mon, 7 Sep 2015 09:32:17 +0200 Received: from 317EX.domainB.com (172.16.64.232) by 312EX.domainB.com (172.16.64.143) with Microsoft SMTP Server (TLS) id 15.0.995.29; Mon, 7 Sep 2015 09:32:16 +0200 Received: from 231EX.domainB.com (172.16.64.60) by 317EX.domainB.com (172.16.64.232) with Microsoft SMTP Server (TLS) id 15.0.995.29; Mon, 7 Sep 2015 09:32:16 +0200 Received: from ironport.domainB.com (172.16.65.16) by 231EX.domainB.com (172.16.64.60) with Microsoft SMTP Server id 14.3.158.1; Mon, 7 Sep 2015 09:32:15 +0200 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: A0BCBQCdPO1V/wpblD5IFhkBgjwhLAEiMWkGrV2JWod4GgUBBYcjPBABAQEBAQEBgQqEKgwhHEIBDyRsBwEEG4gnAwGkbKQPhUJwiV2DIAxBgTEFlVWORoQziFCIPINsJoFKAQsBgilxh0SBBQEBAQ X-IPAS-Result: A0BCBQCdPO1V/wpblD5IFhkBgjwhLAEiMWkGrV2JWod4GgUBBYcjPBABAQEBAQEBgQqEKgwhHEIBDyRsBwEEG4gnAwGkbKQPhUJwiV2DIAxBgTEFlVWORoQziFCIPINsJoFKAQsBgilxh0SBBQEBAQ X-IronPort-AV: E=Sophos;i="5.17,484,1437429600"; d="scan'208,217";a="10003978" Received: from eta.domainA.com ([62.xxx.xx.10]) by ironport.domainA.com with ESMTP; 07 Sep 2015 09:32:15 +0200 Received: from ETA.domainA.com (192.168.128.235) by ETA.domainA.com (192.168.128.235) with Microsoft SMTP Server (TLS) id 15.0.1076.9; Mon, 7 Sep 2015 09:34:20 +0200 Received: from ETA.domainA.com ([::1]) by ETA.domainA.com ([::1]) with mapi id 15.00.1076.000; Mon, 7 Sep 2015 09:34:20 +0200 From: =?iso-8859-2?Q?Be=B3ko_Bart=B3omiej?= <Bartlomiej.Belko@domainA.com> To: "'bart.test@domainB.com'" <bart.test@domainB.com> Subject: zaproszenie Thread-Topic: zaproszenie Thread-Index: AdDpP5kMyMCMbPmnRx2vAgAzt6KVkQ== Date: Mon, 7 Sep 2015 07:34:19 +0000 Message-ID: <2331fe7580224c0b861e4209065012d0@ETA.domainA.com> Accept-Language: en-US, pl-PL Content-Language: pl-PL X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [192.168.128.194] Content-Type: multipart/alternative; boundary="_000_2331fe7580224c0b861e4209065012d0ETAdomainAcom_" MIME-Version: 1.0 Return-Path: Bartlomiej.Belko@domainA.com X-MS-Exchange-Organization-MessageDirectionality: Incoming X-MS-Exchange-Organization-Network-Message-Id: 89c905ae-9f54-4c63-2553-08d2b7567491 X-MS-Exchange-Organization-AVStamp-Enterprise: 1.0 X-MS-Exchange-Organization-AuthSource: 231EX.domainB.com X-MS-Exchange-Organization-AuthAs: Anonymous