Mektozo , Just another Contoso ! :)

While I was working on a DAG with separate MAPI and Replication Networks whenever I  make any changes to DAG like running start-DatabaseAvailabilityGroup or Set-DatabaseAvailabilityGroup I get the following warning message: "No static address matched networks "Cluster Network ". Specified static addresses: x.x.x.x". The Cluster Network was the Replication Network whose subnet is different than that of the DAG IP addresses. Seems that Exchange wanted to utilize this network for MAPI traffic. Although When I run the command get-DatabaseAvailabilityGroupNetwork I find that MAPIEnabled is false on the replication network. when I compared the cluster networks of this DAG with another healthy DAG I found that the checkbox "allow clients to connect through this network" was checked. when I uncheck it, it gets checked by itself again  !. The reason was that one of the DAG members had the "register this connection's address in dns" che...

Hi, It might be tricky if you want to delete the default mailbox dabase if you have a forest root Active Directory domain and Exchange server is installed in a child domain. Normally you would do the following: 1- Get all arbitration mailboxes: get-mailbox -database - arbitration 2-Move the resulting accounts to another Database: get-mailbox -database - arbitration | New-moverequest -targetdatabase But you have to do these extra steps in order to fully remove the system mailboxes and be able to remove the database: 1-Get all arbitration mailboxes using the DomainController switch specifying a DC in the Root Domain. get-mailbox -database   -domaincontroller  - arbitration 2-Move the resulting accounts to another Database: get-mailbox -database   -domaincontroller - arbitration | New-moverequest -targetdatabase -domaincontroller 3- And now you can successfully remove the database!  

I have faced a problem at a cusomter site;mails  cannot flow from an Exchange 2010 server to a specific Exchange 2003 server , while it can flow to other Exchange 2003 servers. Exchange 2010 servers were in AD domain: ChildA.parent.com and Exchange 2003 server was in ADdomain : ChildB.parent.com. Domain controllers of domain ChildB.parent.com only existed at the site of Exchange 2003. The queue viewer gave the following message : " 451 4.4.0 Primary Target IP Address Responded with (501 5.5.4 Auth Command Cancelled) "  and the application log gave the following error: Outbound authentication failed with error -2146892976 for Send connector Intra-Organization SMTP Send Connector. The authentication mechanism is Gssapi. The target is SMTPSVC/Exchange2003ServerFQDN i have checked the SPN , using Setspn -l Exchange2003ServerName aother posts on the Internet suggested, the SPN was not in place so i had to add it using : setspn -a SMTPSVC/Exchange2003ServerFQDN Ex...

I have faced a problem when integrating Lync with Exchange 2010 UM , where calls could not be established to UM for external users, whenever i call the susbscriber access from the Internet i get the following error: "call failed due to network issues. try logging out of lync logging back in, or try again later" After revewing the logs, i found the following entry in the event viewer on the Lync front-end server : Event ID: 1400 Source: MSExchange Unified Messaging The following UM IP gateways did not respond as expected to a SIP OPTIONS request. Transport = TLS, Address = lyncfe.domain.com, Port = 5061, Response Code = 0, Message = This operation has timed out. Solution: Issue a certificate dedicated to UM, where the subject name is the FQDN of the UM server.

I was adding amailbox server to a DAG, the mailbox server was in another site than the original DAG members, the wizard fails with the errror "A server-side database availability group administrative operation failed. Error: Windows Failover Clustering timed out while trying to validate server 'exchange03'. If this is in a disjoint DNS namespace, the DNS suffixes for all servers in the database availability group must be present on every server." as in the screen shot below: after googling a bit i found this very useful post ( http://www.exchangemaster.net/index.php?option=com_content&task=view&id=143&Itemid=1&lang=en ) thank you Dejan, you really saved my day. The issue was that there was an ISA server separating the two sites , the solution was to turn off the option called "Enforce Strict RPC Compliance" in ISA server. SOLUTION Turn off the Enforce Strict RPC compliance option in ISA Server. This option can be found in 2...

I was doing an Upgrade for Exchange 2003 to Exchange 2010 and after i installed the first CAS server and opened the EMC an error appeared that i have no permissions... while i was logged in with the setup account and it was a memeber of the Organization Managemnet Group. and i founbd this in the Applicaiton Log  "(Process w3wp.exe, PID 6716) "RBAC authorization returns Access Denied for user Udomain.Local/Users/AccountName. Reason: No role assignments associated with the specified user were found on Domain Controller XXXXX" " After alot of searches i was pulling my remaining hair out :)  I  found this post ( http://social.technet.microsoft.com/Forums/en-US/exchange2010/thread/fc568cc6-8691-4127-b70b-bcc82f9b1f7f?prof=required ) The issue was with 2 things : Allow inheritable permissions check Box was not enabled on the Exchange  Microsoft Exchange Organzaiton container inside the Configuration partition. The value for the attributes msExchRoleLink ...