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Exchange access when machine is not joined to domain

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Hi,

I would like to find out what makes an Exchange server permit a machine which is not joined to domain to have normal Outlook functionality? If I would for example like to restrict that option which is currently enabled in our company, how would I do it?

Thanks,


Cannot Install PSTCapture in Windows Server 2012 R2

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Dear All,

I install PSTCapture, I found problem when installed with Windows Server 2012 R2. it required WP Shell 3.0 but in this current version is shell 4.0, please suggestion.

Exchange 2016- Exchange Management Shell

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Hi All

I have installed Exchange 2016 and the Exchange Management Shell is none functional. The error given is

VERBOSE: Connecting to Ex2k16-01.The-Network.Expert.
New-PSSession : Cannot find path '' because it does not exist.
At line:1 char:1
+ New-PSSession -ConnectionURI "$connectionUri" -ConfigurationName Micr ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : OpenError: (System.Manageme....RemoteRunspace:RemoteRunspace) [New-PSSession], RemoteExc
   eption
    + FullyQualifiedErrorId : PSSessionOpenFailed 

I have can successfully enter a PS-Session from a different computer to the exchange server and it works fine. I have installed many Exchange 2010 and Exchange 20113 servers and have never had any issues like this.

Strange thing is that ECP works fine

System is running Server 2012R2 and Exchange 2016

Any help would be appreciated.

Thanks

Tim

Additional mailboxes in Outlook - online vs cache mode

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Hi everyone,

I am really sorry for probably repeating a topic that has been asked since the age of man! but i am trying to work out if there is anything i can do in terms of best practice when it comes to adding additional mailboxes into outlook.

So i work for a rather large IT distribution company and we as many other companies use shared mailboxes for things like customer service or sales enquiries etc. Now where it gets tricky is the size of the shared mailboxes, the amount of emails and the amount of folders etc. some of ours can be on the large side 5+ GB.

Since we migrated over to Office 365/Exchange Online with our tenancy in North America we have a real bad performance when additional mailboxes are in online mode and partly i think this is purely down to the location of the mailboxes now. from UK to North America.

But i cant help wonder that we cant be the only company with this issue. so what do others do? Putting the additional mailboxes into cache mode seems to introduce other issues in regarding to flagging and adding categories etc.

There is a limit to how much it is possible to reduce the amount of emails and folders in these shared mailboxes so hence why i am asking other fellow Exchange admins for some advice.

Thank you in advance. 

Exchange server 2013 or Online - In-Place Hold vs Litigation Hold

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Hello,

What is the difference between Enabling In-place Hold vs Litigation Hold in Exchange 2013 or Online? Is there any advantage of using one vs other?

Thanks


Karthik R

new mailbox serach

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How do i run new-mailboxsearch query to enable In-place hold on for all user mailboxes. i found the query for distribution group but i am not comfortable running it against DL.

Thanks


Karthik R

Max Database Cache

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As we known (https://technet.microsoft.com/en-us/library/dn792020%28v=exchg.150%29.aspx), Total Mailbox Cache Size have target to 25% of RAM.

Is there a way to change this parameter?

Thanks.

Event ID 16025

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Edge server 2013. I see in the vent viewer a lot of the above event id's. The event states:

No DNS servers could be retrieved from network adapter 00000000-0000-0000-0000-000000000000. Check if the computer is connected to a network and Get-NetworkConnectionInfo returns any results.

Get-networkconnectioninfo on the edge server:

Name        : Realtek RTL8139C+ Fast Ethernet NIC
DnsServers  : {192.168.123.2, 192.168.123.22}
IPAddresses : {192.168.124.4, fe80::11e4:a7cd:526e:eebb}
AdapterGuid : fb15fdb4-bcac-43a0-907b-dd62dea46e62
MacAddress  : 00:16:3E:0B:04:EF
Identity    : fb15fdb4-bcac-43a0-907b-dd62dea46e62
IsValid     : True
ObjectState : Unchanged

Mail seems to be flowing fine. User action here:

http://www.microsoft.com/technet/support/ee/transform.aspx?ProdName=Exchange&ProdVer=8.0&EvtID=16025&EvtSrc=MSExchangeTransport&LCID=1033

says to associate the guid with DNS. Run get-transportservice | fl *dns*:

ExternalDNSAdapterEnabled : False
ExternalDNSAdapterGuid    : 00000000-0000-0000-0000-000000000000
ExternalDNSProtocolOption : Any
ExternalDNSServers        : {8.8.8.8}
InternalDNSAdapterEnabled : True
InternalDNSAdapterGuid    : 00000000-0000-0000-0000-000000000000
InternalDNSProtocolOption : Any
InternalDNSServers        : {}
DnsLogMaxAge              : 7.00:00:00
DnsLogMaxDirectorySize    : 100 MB (104,857,600 bytes)
DnsLogMaxFileSize         : 10 MB (10,485,760 bytes)
DnsLogPath                :
DnsLogEnabled             : False

I had to use external DNS in order to get mail flowing thats why 8.8.8.8 is used above. Now the internalDNSServers option is blank. Is this what the event id is balking about? The NIC does have the internal DNS servers address so i am not sure why this option is blank or why event viewer is complaining about DNS


DNS Suffix name change

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We recently(6-8 months ago) migrated to new hardware for our exchange 2013 server, and when I did the install on the new hardware, I mistakenly changed the DNS suffix to our internal DNS name out of habit.  I've been getting a couple pop up errors when we open Outlook, and IMAP doesn't like the name error with our secure Certificate.

I am planning on doing updates to the server in the next week or so, and from what I can read, uninstalling the "client access" portion of exchange should let me rename the DNS suffix, reboot and then reinstall that portion of Exchange.  

Does this sound feasible, or do I need to migrate everything off the server, reinstall and then migrate back, or is there a change with a recent update that allows for renames.  We are on CU7 and going to CU10 planned for this Sunday.  Also we only have 1 server running as standalone.


Free/busy issue in 2010/2013/Online hybrid environment

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I hope someone can help here. The basic gist of this is that I think it's a firewall issue but I need help to prove that. I'm not a networking guy at all. I know Exchange fairly well but don't have a clue about Firewalls etc. So, we have an environment consisting of Exchange 2010/2013/Online. There is an issue viewing free/busy information but only in one direction. Exchange Online users cannot view free/busy info of Exchange 2013 users. Free/busy sharing works in every other direction. I had a look at the MS troubleshooting guide; I then noticed that, from the 2013 servers, I cannot connect to powershell online, nor can I successfully run Get-FederationInformation -DomainName <365 tenant>. Both of these work on Exchange 2010.

If I run Get-FederationInformation -domainname <Office 365 Domain> on an Exchange 2010 server I get the repsonse:

RunspaceId            : xxxxxxxxxxxxx
TargetApplicationUri  : outlook.com
DomainNames           : {domain.onmicrosoft.com, domain.mail.onmicrosoft.com}
TargetAutodiscoverEpr : https://autodiscover-s.outlook.com/autodiscover/autodiscover.svc/WSSecurity
TokenIssuerUris       : {urn:federation:MicrosoftOnline}
IsValid               : True

If I run that on an Exchange 2013 server I get:

Federation information could not be received from the external organization.+ CategoryInfo          : NotSpecified: (:) [Get-FederationInformation], GetFederationInformationFailedException+ FullyQualifiedErrorId : [Server=MBXSERVER,RequestId=xxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxx,TimeStamp=26/08/2015
   07:15:37] [FailureCategory=Cmdlet-GetFederationInformationFailedException] D11619D6,Microsoft.Exchange.Management.
  SystemConfigurationTasks.GetFederationInformation+ PSComputerName        : casserver.domain.com

So, my ultimate questions are:

 - Do you think this is a firewall issue?
 - If so, how can I prove it?
 - What else could cause this behaviour?

Installing Wireshark etc. on the Exchange servers isn't an option.

Thanks...

High availability for client access in Exchange 2016

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Friends,

I'm doing some testing with Exchange 2016 in coexitência with Exchange 2010 and emerged me some doubts.

I've talked to my friends, but I realized that as 2016 is new, there are some doubts even by experienced.

I tested the DAG and it worked perfect.

Now when it comes to CAS, which was removed in 2016, is a doubt about the high availability.

Reading the blogs of those who have tested the preview, it was said that we have to use solutions like KEMP Load Balanced or DNS RR or IIS ARR.

After all, what better solution? What that actually works in high availability without surprises?

I'm testing with KEMP Free, but would like to hear more about it in practice.

Thank you.

Public Folder replication

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Coming from the Exchange 2010 world and planning on upgrading to Exchange 2013 or 2016. We use PF extensively between 3 offices that all have a Exchange server in them. The replication of public folders between these servers is something we rely on heavily.

With the conversion of PF to being more like shared mailboxes does this mean in 2013 or 2016 public folders are no longer replicated to all the Exchange servers in a organization?  I don't think DAG's would be a solution across a WAN but is this what they are suggestion to take it's place? 

Trying to decide if we are going to need to convert our 100's of public folders to Shared mailboxes and increase our wan pipe to allow users to access them quickly from the one exchange server that houses the database.  The documentation I have found makes no mention of replicas which makes me think it no longer is possible.  If this is true what would the different between a shared mailbox and a public folder mailbox be?

Thanks

Craig

OWA Backdoor - A New Persistent Attack Targeting OWA?

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"

Researchers have uncovered advanced malware that can steal virtually all of a large organization's e-mail passwords by infecting its Outlook Web Application (OWA) mail server over an extended period of time.

Researchers from security firm Cybereason discovered the malicious OWA module after receiving a call from an unnamed company that had more than 19,000 endpoints. The customer had witnessed several behavioral abnormalities in its network and asked Cybereason to look for signs of an infection. Within a few hours, the security firm found a suspicious DLL file loaded into the company's OWA server. While it contained the same name as a benign DLL file, this one was unsigned and was loaded from a different directory.

The OWAAUTH.dll file contained a backdoor. Because it ran on the server, it was able to retrieve all HTTPS-protected server requests after they had been decrypted. As a result, the attackers behind this advanced persistent threat—the term given to malware campaigns that target a specific organization for months or years—were able to steal the passwords of just about anyone accessing the server."

- Source

Cybereason Threat Report

Did anyone came across an official update from Microsoft regarding this?


Exchange 2013 MsexchangeFrontEndTransport Error 2030

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Can anyone help me to understand this error message and how to fix it? I've received this a few times over the last few hours on my front end 2013 Exchange server.

Log Name:      Application
Source:        MSExchangeFrontEndTransport
Date:          9/20/2013 2:46:31 PM
Event ID:      2030
Task Category: SmtpSend
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      frontendserver
Description:
The Ehlo options for the client proxy target 10.100.10.173 did not match while setting up proxy for user domain/user on inbound session 08D084466731C660. The mismatched settings might cause some messages to get rejected. Continue with proxying even though there is a mismatch. The critical non-matching options were maxSize. The non-critical non-matching options were .

Exchange and ForeFront Endpoint Protection documentation?

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Is there an updated document for installing ForeFront Endpoint Protection on an Exchange 2010 (or newer) server?  This is the only document that I can find and it was written for Exchange 2000:  https://support.microsoft.com/en-us/kb/328841

I see that I can exclude .log, .edb files...   what about Content Index files???   .001

I had an incident where ForeFront quarantined the INDEX.001 file.

Jason


Jason Meyer


Unable to open ECP with server FQDN.. Error executing child request for /owa/auth/errorFE.aspx

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I am facing a weird issue..

I stood up a new server on a remote site and am trying to access it's ECP using the server FQDN but I get an error message within IE saying "Error executing child request for /owa/auth/errorFE.aspx

I figured I'd try with my existing servers, I am getting the same thing. The only way I can get into ECP is by using the External address..

Figured I would have a look at the ECP Virtual Directory through the shell but when I try to get the authentication information, it takes forever and doesn't return results... If I try through ECP (using the external address), I cannot open the auth page, I get the please wait box for hours..

Anyone ever experienced this?


Exchange behind ARR showing the local server ip in the url

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I have setup my exchange server behind another iis server using application request routering. This works fine but when you see the login screen for exchange it reveals the local exchange server ip like this: https://mail.domain.com/owa/auth/logon.aspx?replaceCurrent=1&url=https%3a%2f%2f10.0.5.5%2fowa%2f

I found a solution for this a while ago on another server but i can't find it any more and I don't know it any more. On that server was the ip the external url.

Does anyone know how to hid the ip?

Exchange 2010, high delay with sending emails - TooManySubmissions

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Hi there,

I've been facing this weird issue where users of one particular server are experiencing extreme delays when sending emails from outlook/OWA.

Outlook would put the email in the sent folder but it wouldn't be picked up by the message queue until very very much later (sometimes up to 1 hour). OWA would leave the message in the draft folder.

The MSGTRKM log give me this error: TooManySubmissions, Too many concurrent submissions from mailbox database. The limit is 8.

The message is quite easy to understand but I can't seem to figure out the root cause... anyone has any input?

Much appreciated.

Route email over send connector, not local mailbox

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Hi,

I've got a 1 exchange 2013 server, with all roles. I've got several domains hosted. One domain is now moved away and mx is switched to new provider.

Since I need to maintain the old mailboxes for compliance I have changed the domain from authorative to "ExternalRelay".

<rant>On any other mailserver I have worked with, that would route email originating withing the server out, and delivered using MX, but exch2013 keep doing local delivery if the is a user mailbox, no matter of changes I make</rant>

Please help, I know it's possible to remove the email adresses of the users/mailboxes, but I got huge volumes of users and no powershell experience. I just want exchange to forget that it ever hosted the domain/user etc, keeping the old boxes archived.

Br Fredrik

Out of policy settings capabilities/options

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Running on premise Exchange 2013 CU8. 

Our meeting rooms can only be scheduled from 7a-6p.

Under Settings--Scheduling Permissions we've chosen "Everyone" in order to allow our property team the ability approve or decline a request for a meeting after hours. This works great in that the team receives an Approve/Decline email for anything out of policy. 
"These users can schedule automatically if the resource is available and can submit a request for owner approval if the resource is unavailable."

The problem is that they are getting emails for every scheduling conflict as well. Of course this is because in our environment meeting room scheduling conflicts are, by definition, out of policy.

Is it possible for Exchange to deny scheduling conflicts automatically while still keeping our system of sending the Accept/Decline email to the property team when a meeting is scheduled after hours?

Thanks

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