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is DNS round robin officially supported?

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Exchange 2013 cu21

we have a "load balancer" that is not actually doing load balancing. as i have two CAS servers, when i reboot CAS01 the load balancer is still pointed to CAS01 thereby the users loose connectivity.

i searched for a better alternative and come across DNS round robin. some say it is the official way supported for HA?


Exchange 2013 DAG and Shadow Redundancy Queue

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Hi,

I have a DAG with 2 Exchange 2013 servers (EX01 and EX02) and 1 File Share Witness server (FSW).
Everything is running fine apart from I notice that the Queue particularly the Shadow Redundancy 
is not clearing.

I have a couple of incoming emails in the Shadow Redundancy Queue that is meant to be delivered to the end user
But it is not appearing in the end users mailbox.

The Status of the email in this Queue is showing Ready. The message count for the Shadow Redundancy Queue
on both Exchange 2013 servers in the DAG are different:

Example:

EX01 - 47 (message count)
EX02 - 78 (message count)

My questiones are:

1. How can I get the emails in the Shadow Redundancy Queue to the end user mailbox? Is this possible?

2. Are the emails in the Shadow Redundancy Queue just copies of the emails which should have been sent to the end users mailbox?

3. Why are emails appearing in the Shadow Redundancy Queue?

4. Is it normal for both servers to have different message count? Presumably it is.

5. Should I worry if the message count in the Shadow Redundancy Queue keeps going up?

Just to reiterate, external emails are coming in fine and end users are receiving them but there are a few that are in the 
Shadow Redundancy Queue that is not being delivered to the end users mailbox.


Kind regards
GMSS

 

Exchange Implementation

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hi all, 

currently we have exchange server 2013 , we have owa.domain.com configured to IP address 10.10.10.10 same as the ip address of Exchangeserver01(hold both Role Mailbox and CAS ) 10.10.10.10 the active node. 

now we have added to new exchange server and we make DAG  and database replicated ,in case the first ExchangeServer01 is down how the traffic will be forwarded to another ExchangeServer02 to achieve high availability .  

what is the best in this scenario ? 

Thanks 

Backups causing Replication Timeout and EventID2153 events

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On an Exchange 2013 DAG, during a Veeam backup, I am seeing eventID 2153 logged on exchange server that a timeout has occurred. The log copier was unable to communicate with server xxxxxx. The copy of database yyyyy is in a disconnected state. The communication error was terminated by server xxxxxx The copier will automatically retry after a short delay.

I cannot find any timeout settings that I can adjust to work past this. 

 

Exchange server goes down... Export EDB into PST?

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Can some body help me.....how can i import my EDB file into Outlook file format

Please help me....

Clients are not connected in one server.

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Hi,

We have two servers which is Exchange 2013.

When databases are mounted in one server, the clients cannot connect.

Please find the below events.

1006

The performance counter '\\server2\LogicalDisk(HarddiskVolume1)\Free Megabytes' sustained a value of '108.00', for the '15' minute(s) interval starting at '1/17/2019 6:21:00 AM'. Additional information: None. Trigger Name:DatabaseDriveSpaceTrigger. Instance:harddiskvolume1


2937

Process edgetransport.exe (Transport) (PID=12416). Object [CN=Administrator,CN=Builtin,DC=mhkglobal,DC=local]. Property [DefaultPublicFolderMailbox] is set to value [domain/Deleted Objects/PF-MBX02
DEL:962cdbf2-1fa7-4cc0-b96e-65d459aa347c], it is pointing to the Deleted Objects container in Active Directory. This property should be fixed as soon as possible.

4105

The Microsoft Exchange Replication service failed to RPC to the local Information Store service. This often means that the Information Store service is not running, but it may also be unresponsive. Error:MapiExceptionNetworkError: Unable to make admin interface connection to server. (hr=0x80040115, ec=-2147221227)
Diagnostic context:
    Lid: 65256  
    Lid: 49064   dwParam: 0x1
    Lid: 12514   Win32Error: 0x6D9
    Lid: 62184  
    Lid: 16280   dwParam: 0x0 Msg: EEInfo: ComputerName: n/a
    Lid: 8600    dwParam: 0x0 Msg: EEInfo: ProcessID: 11756
    Lid: 12696   dwParam: 0x0 Msg: EEInfo: Generation Time: 0419-01-17T06:23:21.7260000Z
    Lid: 10648   dwParam: 0x0 Msg: EEInfo: Generating component: 2

1007

The Mailbox Replication service was unable to determine the set of active mailbox databases on a mailbox server.
Mailbox server: server2.mhkglobal.local
Error: MapiExceptionNetworkError: Unable to make admin interface connection to server. (hr=0x80040115, ec=-2147221227)
Diagnostic context:
    Lid: 65256  
    Lid: 49064   dwParam: 0x1
    Lid: 12514   Win32Error: 0x6D9

Exchange 2013 with HA & site resilience

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Hi Team,

   I am having Exchange 2013 running on windows 2012 R2, I have multiple CAS & two mailbox server for DAG @ HQ. But our current Exchange server is having multiple issue, so we are planning to build new Exchange server 2013 2 CAS with HA and two other servers for mailbox dag.

I need the suggestion how should i take forward as a best practice do i need to migrate or is it straight forward. I am planning to have site resilience also at different site, Need guidance for that too. I will be having one sever for CAS and one for mailbox, let me know how to configure the site resilience.

All the above servers i have mentioned running on Virtual environment Vmware.

Expecting a positive reply

Thanks & Regards

Alex



Alexy

Exchange 2013 CAS Filover without Loadbalancer

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Now I have done the DAG configuration successfully. I don't have a load balancer in place. I tried the DAG test and the database successfully switchover to another server. but my owa/ecp are not working and also all the outlook clients got disconnected.

Just now i added the DNS entry for new dag member in DNS server. and will give a try the switchover again after sometimes. and let you know the updates.

Right now my firewall is port forwarding to one of my existing exchange server (for External OWA/ECP access)

What if that server is down ? how can i access OWA/ECP from outside network? Can i port forward to two CAS server in firewall ? By the way i am using a ssl certificate with added entries "www.abcd.com, abcd.com,autodiscover.abcd.com".


Not able to add database copy

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MS Exchange 2013 

4 nodes, 2 DB and 2 CAS

Issue : Adding passive database copy failing for one database.

I already have other 5 databases with active passive copies running fine.

When i try to add DB copy in GUI, It will stop after 15 seconds with below error

The seeding operation failed. Error: An error occurred while performing the seed operation. Error: Communication was terminated by server 'SourceServer': Data could not be read because the communication channel was closed. [Database: DBname, Server: DestinationServer]

Status of DB is : Passive failed and suspended

content index state " suspended

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I have tried above method multiple times ,Also tried postpone option while adding DB copy. 

Restarted both Exchange DB servers and tried

Deleted the passive copy along with db and log folders and tried to add fresh copy

Also restarted search services and tried

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Also tried Update-databasecopy with -databaseonly and -catalogonly switches. this also throws errors

Also tried below :

 Set-ADServerSettings -PreferredServer server.domain.com

Really appreciate your help 

Thank you

Exchange 2013 file and folder exclusions for backup

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Hello -

I am using DPM 2012 R2 to backup my Exchange 2013 DAG members (currently, database only).

I now want to add to a different backup job the rest of the server. volumes (C:\, data drives, system state, etc)

DPM allows me to exclude specific folders or specific filetypes.

1) Do I need to exclude any specific folders or filetypes from the job?

2) If so, what should be excluded?

Thanks!

Exchange Dail tone recovery

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I have exchange 2013 2 MBX in DAG environment with 4 DBs one of the DAG nodes encountered the trust relationship issue and unfortunately most of the activated DBs was reside on it.

the steps that I have took was performing a dial tone recovery as the below steps:

created a new dial tone DBs (DTDB1,DTDB2,DTDB3)

Rehomed the users from DBs to corresponding Dial tone DBs except 2 DBs I homed them in the one dial tone DB :( 

Get-Mailbox -Database DB1 | Set-Mailbox -Database DTDB1

Get-Mailbox -Database DB2 | Set-Mailbox -Database DTDB2

Get-Mailbox -Database DB3 | Set-Mailbox -Database DTDB3

Get-Mailbox -Database DB4 | Set-Mailbox -Database DTDB3

Fixed trust relation issues and the lost server become alive again and all replications are working properly.

before going to the production I tested on my lab to rehome the users back to the original DBs but have 2 issues.

Get-Mailbox -Database DTDB1 | Set-Mailbox -Database DB1

Get-Mailbox -Database DTDB2 | Set-Mailbox -Database DB2

Get-Mailbox -Database DTDB3 | Set-Mailbox -Database DB3

Get-Mailbox -Database DTDB3 | Set-Mailbox -Database DB4

1. the 2 DBs that I homed on the same dial tone DB some of them encountered an error message on OWA (your account has been disabled) because that users are homed backed to the wrong DB.

2. the messages that sent and received during dial tone period how can I merge them with the original database. 

Enable UM for an ONprem Exchange and S4b 2015 user without desk phone

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Hi,

How do i configure Voicemail capabilities if the user's mailbox and S4B is hosted in ONprem in a Exchange HYbrid environment, if the user does not have a deskphone 


Recovering from complete server failure with issues

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Long story short our Exchange 2013 server completely tanked.

After starting over, reconfiguring raid, installing 2012 R2, installing Exchange 2013, and recovering the install files from a backup I realized the name of the server was a letter off (sigh). I know renaming an Exchange server generally isn't good, but nothing was working as it was since all of the mailbox databases were linked to the correct name still. I went ahead and renamed it. All of the databases are in clean shutdown and ECP works. However, I get a transient error (MapiNetworkError) when trying to mount them.

Anyone have a suggestion on what to do next? Since it's already been down a full day I have some people breathing down my neck, so reinstalling it all again is a very last resort.

exchange .edb corrupt

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hi all,

Had an exchange server go down, got the exchange .edb files only to find its corrupt, tried to use eseutil.exe to repair the file but when I try and open it with ontrack powercontrols saying its corrupt still.

Regards



How do I export database from corrupt exchange EDB files?
I wonder, how can I fix corrupt EDB files issue? I was trying to migrate & convert my EDB file to PST. I had my EDB files back-up but, it seems corrupt now. I need recovery of all Calendars, Contacts, Journals, Distribution List and Tasks from corrupt backup EDB file anyhow. Please suggest some valuable steps for quick procedure.

We cannot perform database copy in DAG

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We have Exchange 2013 sp1. We have 2 servers in DAG. We have added one more and when trying to replicate the database copy to new server, we receive below error.

The Microsoft Exchange Replication service was unable to perform an incremental reseed of database copy 'database' due to a network error. The database copy status will be set to Disconnected. Error A timeout occurred while communicating with server 'exc01'. Error: "A connection could not be completed within 5 seconds."

Replication health command returned below.

CheckDescription : Checks that the networks are healthy.
Result           : *FAILED*
Error            : Subnet '100.100.100.0/30' on network 'MapiDagNetwork' is not Up.  Current state is 'Misconfigured'.
                   Subnet '100.100.100.0/30' on network 'MapiDagNetwork' is not Up.  Current state is 'Misconfigured'.
                   Subnet '100.100.100.0/30' on network 'MapiDagNetwork' is not Up.  Current state is 'Misconfigured'.
                   Subnet '100.100.100.0/30' on network 'MapiDagNetwork' is not Up.  Current state is 'Misconfigured'.
                   Subnet '100.100.100.0/30' on network 'MapiDagNetwork' is not Up.  Current state is 'Misconfigured'.
                   Subnet '192.168.1.0/24' on network 'MapiDagNetwork' is not Up.  Current state is 'Misconfigured'.
                   Subnet '192.168.1.0/24' on network 'MapiDagNetwork' is not Up.  Current state is 'Misconfigured'.

Please let me know how to troubleshoot.


Exchange Disaster Recovery 2

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Hello everyone,

So i've done the following:

Restored my DC's (2x Server 2012 R2)
Created a new, identical, server. Same name, ip, joined domain etc (1x Server 2012 R2)
Installed all pre-requisites

Tried to restore one of my exchange server with:
.\setup /m:RecoverServer /IAcceptExchangeServerLicenseTerms

Now i get the following error:

Performing Microsoft Exchange Server Prerequisite Check

    Configuring Prerequisites                                                                        COMPLETED
    Prerequisite Analysis                                                                            FAILED
     The Exchange server is a member of a database availability group.

Note: I don't have any live Exchange servers in this environment at the moment. (since they are both crashed un-repair-able)

I've installed Exchange Management Tools on another server, but it can't connect since both exchange servers are gone. Any idea how to solve this?

Kind regards,
Justin

Previous Topic i opened for a similiar issue
Exchange Disaster Recovery 1


Setup /m:RecoverServer an exchange server with different (upgraded) Operating System version?

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Hi all,

Can we recover an exchange server with different Operating System version?
For example the failed Exchange Server is: Exchange 2010 SP3 with OS Windows Server 2008 R2, Can I setup Setup/Mode:RecoverServer in Windows Server 2012?

thank you


thanks, wk

on recreated public folder is problem add SMTP address

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Hello, we have exchange 2013 after hard recovery from backup vhd couple month ago old. Backup is damagen and we has recover  probably only pst with public folders. And there is problem. One public folder has been created few week ago. We wos recreate this folder (mail enabled) new but we can not add mail address becouse exchange server (probably in active directory)  has usage. How to clean or add this important address to public folder?

There is error message:
"-domain-"/Microsoft Exchange System Objects/"-alias-" 10744667
The proxy address "smtp:-mail address-" is already being used by "-domain-"/Microsoft Exchange System Objects/"-alias-" . Please choose another proxy address.

Moving a Exchange 2013 DAG Member

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We have exchange 2013 CU21 in a 2 node DAG. Both of these nodes are hyper-v vm's. The exchange vm that needs to be moved also has 1 virtual hard disk. The DB is on a different drive. My thought is i can use hyper-v manager to move the vm and storage to another server. What is the best way to do this without losing data?

Extending Exchange 2013 DAG to DR Site for High Availability and Site Resiliency

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Hello Folks,

We are planning to extend exchange 2013 DAG to DR Site.

First AD part:

Currently My AD has single site ( Default-First-Site-Link ) and has two domain controllers 2012 R2.

For DR site, planning to install one more domain controller, I think i should create a new site in Active Directory sites and services as DR site.

My queries ( Below is my procedure i am doing it in correct way )

First DR site should be created in Active Directory correct ?

Adding the DR site Subnet as well

Then Inter-Site Transports > New Site link and adding both the Sites ( Default-First-Site-Name ) and ( DR Site )

After adding the sites i will create a new machine at DR site and promote it as a domain controller ( Ofcourse i will consider the ports and services between two sites for network traffic )

Once All the domain controllers are replicating then i will start the exchange part.

Prerequisites for Exchange High Availability and Site Resilience

  • All Mailbox servers in a DAG must be in the same Active Directory domain
  • All copies of a database use the same path on each server containing a copy. The database and log file paths for a database copy on each Mailbox server must not conflict with any other database paths
  • Database copies can be created in the same or different Active Directory sites, and on the same or different network subnets
  • Database copies aren't supported between Mailbox servers with round trip network latency greater than 500 milliseconds (ms)
  • Additional Domain Controller with DNS role at DR site
  • Windows Server 2012 R2 Standard License
  • Exchange Server 2013 License
  • Storage Availability to host the Mailbox Databases
  • Networking Infrastructure for MAPI and Replication networks
  • Adequate Network Bandwidth for DAG Replication and client traffic connectivity for outlook clients
  • Site Infrastructure ( Power and Cooling )

Additional Prerequisites such as Reducing the DNS TTL value, Certificate Planning and Outlook Provider

      Exchange Server

  • Install the windows 2012 r2 OS and update to the latest patches
  • Install the Exchange Server 2013 Pre requisites for the Client Access Role and Mailbox

Server roles

  • Install the Exchange Server with Enterprise Admin Credentials
  • Prepare the Active Directory for Exchange 2013 with Schema Admin Credentials
  • Install the Exchange Mailbox Server Role and Client Access Server Role
  • Install the Exchange Cumulative Update 17 on the Exchange Server
  • Add the DNS records for DR Exchange Server
  • Configure the NTFS drives on the DR Exchange Server alike to the HQ Site Exchange Servers
  • Configure the MAPI and Replication Network and test the connectivity
  • Configure the SSL certificate
  • Configure the namespace URL’s
  • Configure the virtual directories
  • Configure the Send and Receive connector
  • Add the DR Exchange Server as a member in Database Availability Group
  • Configure the Alternate Witness Directory for DAG if required
  • Add the database copy to the DR Exchange Server one by one
  • Check the Mailbox Database Copy Status
  • Ensure the Database Copies and Content Index are in healthy state

DR Drill for Exchange

  • Add the additional MX record on the Public DNS
  • Switchover ( Moving the Active Database Copy to the DR Exchange Server )
  • Activate the Mailbox Database Copy on the DR Exchange Server
  • Test the Mail Flow and Client Connectivity

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