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Routing Exchange e-mail to internal Linux application server

August 27, 2020, 8:44 am
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I have a linux server, running on the same internal network as my Exchange server, which is hosting a web application. The server also has postfix installed on it, so that when it receives e-mail to a specific address (alias), it processes the contents via a php script.

What I want to do is when someone within the company send an e-mail to a specific internal address, for example if 'employee.name@company.com' sends an email to 'alias@company.com', Exchange forwards the e-mail to this linux server for processing.

Would anyone have a suggestion on where I could start with this please?

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Exchange 2013 Certificate Issue

August 27, 2020, 9:10 am
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This morning I clicked renew on my Microsoft Exchange 2013 certificate as it was about to expire. Now users are getting a security alert saying the certificate was issued by a company you have chosen not to trust and the name on the security certificate is invalid or does not match the name of the site. Its a self signed certificate and I presume I need to make the certificate trusted by installing it to the trusted root certification authorities store. What procedure should I follow?

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Trouble enabling auditing in exchange admin center:: Exchange 2013

August 27, 2020, 9:27 am
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I'm having an issue where some calendar items on a shared account gets deleted every once in a while and replaced and I'm wondering if auditing will show the culprit.

I've tried enabling auditing with the admin account

Powershell
Set-Mailbox-Identity"sharedaccountemail"-AuditEnabled$True

Gone to Exchange admin center > Compliance Management > Run a non-owner mailbox access report,

Select date range, account to search, search for access by "All non-owners", hit search and I see a last accesses date but on the right side "An error occured while trying to access the audit log. for more details, see the inner exceptions.

Seems almost like a permission thing but I've gone and added the admin user to Compliance Management and records management just to be sure. Both roles have access to audit logs, message tracking.. etc

Anyone has any...

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How Many Exchange server 2013 can I have in my enviroment?

August 27, 2020, 11:16 am
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 How many  Exchange Server 2013 Can have handled my emails? 

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Exchange 2013 OWA - Can you delay an email delivery?

August 27, 2020, 7:53 pm
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Greetings Exchange Pro's,

With Exchange 2013 OWA, is there a way we can delay an email or series of emails delivery date and time? I haven't had much luck finding any info on this subject.

Thank you!

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exchange delegation federation certificate expired

August 28, 2020, 1:48 am
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Hi

I have just noticed our exchange delegation federation certificate has expired on our on Orem exch 16 server. We are in a hybrid configuration with office 365. Don’t seem to be causing any issues as it expired a week ago. Do I need to renew ? What’s it for?

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Systemmailbox/discoverymailbox users in AD password changes

August 28, 2020, 12:43 pm
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We are running Exchange 2013 and I'm looking to change the password to both the accounts mentioned above. I have read this happens automatically but does not seem to be the case for us. Is there any harm in changing passwords for these two accounts?

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Migrate Enterprise Vault to O365

August 28, 2020, 2:33 pm
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Hello everyone

what is the best tools to migrate  Enterprise Vault version 12.2 for O365 Email cloud

regards

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Exchange 2010 550 5.7.25 Client Host Rejected: cannot find your hostname

August 28, 2020, 3:54 pm
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We have received this reject notification from a couple of domains and I have not been able to track down the cause. I checked with our ISP and there is a PTR record for mail.cityofseward.net that points to the correct external IP of our mail server. Our external DNS and SPF records appear to be in order. This has only happened with two domains that I am aware of.

Here is a copy of the rejection notice our user received when attempting to reply to an email.

(reason: 550 5.7.25 Client host rejected: cannot find your hostname, [209.124.136.55].

----- Transcript of session follows ----- ... while talking to (recipient server).:

>>> DATA

<<< 550 5.7.25 Client host rejected: cannot find your hostname, [209.124.136.55]. 

550 5.1.1 ... User unknown <<< 554 5.5.1 Error: no valid recipients. 

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Exchange Server 2016

August 29, 2020, 7:35 am
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Hello, 

Only one shared mailbox is not receiving emails from external (from other domain). I checked the email flow IMAP & MAPI is enabled. Internal mail flow is working. 

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Echange online / Office 365 distribution group

August 29, 2020, 8:15 am
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I'm creating a custom roles in exchange online for our servicedesk.
I assigned the following roles to them:
Address Lists
Distribution Groups
Mail Recipient Creation
Mail Recipients
Message Tracking
Migration
Move Mailboxes
Recipient Policies
Reset Password
Security Group Creation and Membership
Team Mailboxes
User Options
Only the problem now is that they cannot edit distribution groups.
If they want to see the settings they are getting the error:
You don't have permission to manage the General settings for this group. You need to be a Global Admin to manage them.
And if they want to edit the distribution groups they are receiving the error:

Can't save "Send copies of group conversations and events to group member's inboxes" and/or "Let people outside the organization email the group" settings. Either your assigned product license doesn't include...
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Exchange HCW Connecting to outlook.office365com failed

August 30, 2020, 11:53 am
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I'm running Exchange Hybrid Configuration Wizard and on the last step it fails with error message:

Connecting to remote server failed with the following error message: Connecting to remote server outlook.office365.com failed with the following error message : Access is denied.


Both account I'm using [on-prem and online] are admin accounts. How can I resolve this error?

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Does Exchange Online (365) auto update AD DS (on-prem) with EMAIL Property?

August 30, 2020, 12:17 pm
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We have AD on prem. 2012 functional level.

We use ADSyn to sync AzureAD and AD DS.

We've been using a SharePoint List named "New Hire Form" to create new employee accounts.
There is a Power-Automate "FLOW" that is triggered when the Form is submitted in SharePoint.
This ultimately results in an AD Account being created with a given username and password.
I can't find in the FLOW where this occurs.

I'm assuming the code that is creating the AD Account is pulling the FirstName.Lastname and appending our domain to the that to create the SamAccountName First.Last@domain.com and then this is being used for the Email Property.

So, we are migrating away from this automation and hav begun Manually creating AD Accounts in the ADUC locally, then waiting to the Sync to AzureAD, then assigning Office 365 Licenses. I hadn't noticed this until recently but...

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Issue with enhanced status code explanation message

August 30, 2020, 1:54 pm
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Hi,

I have a user who has left and, although we want to keep the mailbox, I don't any new email to come into it.

Ideally, I would like people who send email to that mailbox to get an Out of Office from that mailbox advising that the user has left, but to have OoO, the mailbox would have to accept mail.

I have created a transport rule to reject message sent to the user and it is supposed to reject the message with a '5.7.1 - The user has left the orginisation' message, but i'm having some issues with this.

Although I am getting the 5.7.1 rejection, the explanation is not being included and I wonder if someone might know what i've done wrong?

For info, I have this setup and working OK in an Exchange 2010 environment, but this is in 365 and, although configured the same, the explanation is just not there.

TIA,

Stephen


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O365 Hybrid config error: connecting to remote server failed, ssl internal error

August 31, 2020, 5:47 am
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I have a on-site exchange 2013 server deployed in Hybrid O365.

when trying to connect to exchange online to perform some tasks from my exchange server via powershell with the command

Powershell
$Session=New-PSSession-ConfigurationNameMicrosoft.Exchange-ConnectionUrihttps://outlook.office365.com/powershell-liveid-Credential$UserCredential-AuthenticationBasic-AllowRedirection

I get the error:

Powershell
New-PSSession:[outlook.office365.com]Connectingtoremoteserveroutlook.office365.comfailedwiththefollowingerrormessage:Theservercertificateonthedestinationcomputer(outlook.office365.com:443)hasthefollowingerrors:EncounteredaninternalerrorintheSSLlibrary.Formoreinformation,seetheabout_Remote_TroubleshootingHelptopic.Atline:1char:12+$Session=New-PSSession-ConfigurationName...
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Remove 1 of 2 Exchange Hybrid Servers. Proper Decommission Process

August 31, 2020, 11:50 am
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We have (2) Exchange 2016 hybrid servers in our environment. We are fully migrated to O365 / Hosted Exchange. We want to remove one of the 2 hybrid servers. What is the correct process to remove the one server without affecting the configuration in the global sense for the second Hybrid server that we want to keep? I have reviewed several articles here, but none seem to fit this scenerio.

Thanks.

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User can no longer access mailbox

August 31, 2020, 11:54 am
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In our environment when creating an AD user it is synced to our Office 365 environment and a mailbox is created. When you delete the AD user the next time it syncs the mailbox is moved to the Deleted Users bin in Office 365.

On 8/28 we decided to delete user AD account because they kept being locked out when authenticating credentials and recreated the AD account.
I was not able to restore the mailbox in Office 365 because the original user that was deleted has a different ID than the new one.
I found out I could restore the ad user object through the AD Admin Center > Deleted Objects folder.
I connected to Office 365 and ran the cmd: Get-Mailbox -Identity username and verified it is the same ExternalDirectoryObjectID
When user goes to log into account Office 365 identifies that the user signed in but the user never makes it to the mailbox....
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Outlook keeps asking for password on different workstations

August 31, 2020, 12:26 pm
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Outlook keeps randomly asking for a password on some of our workstations. We run our own Exchange 2019 server and it has been doing great until a few weeks ago where different users are having Outlook pop up and say "need a password".

If they enter their password and click ok it doesn't take it and just asks for it again.

It is happening on my workstation and it is random. If I hit cancel then it will sometimes go away and be good for another day of so without asking. Sometimes I have to reboot.

I used to think the issue was local to my workstation, but now I am starting to think it is an issue with exchange since other users are now having this same issue.

I have thrown everything at this issue including adding the "ExcludeExplicitEnpoint0365" dword into the registry.

I have removed any and all additional accounts from my profile

I have...

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Exchange Calendar Reoccurring Events

September 1, 2020, 12:19 pm
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Hello

In regard to Exchange calendar reoccurring events, a user here created an event in 1/18/2018 to reoccur every Tuesday indefinitely. She would make notes on each occurrence throughout those 2 years. On Aug 27.2020 she went back and set an end date on that series and in doing so, removed all her notes on each individual event in that series.

There is nothing in deleted items as nothing was deleted. If I use Veeam to do a restore it does not show any events to restore with that data, even if I look at a full backup from Aug 22, before she made the change.

We run a backup on her laptop each night at 2 AM and have access to her local ost file from a date prior to the 27th. I cannot open it offline it says it needs to talk to exchange at least once before opening and you know what happens then.

Is she SOL on this one?

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cannot send mails to office 365

September 1, 2020, 12:40 pm
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Dear all,

Since a few days, we are having a very strange thing at one of our customers.

Our customer is running Exchange 2016 with latest CU on Windows Server 2016 with all updates installed.

Since a few days, our customer complaints that a lot of e-mails are not delivered to the recipient, and he gets a NDR.

After a few hours of searching, I have found that the non delivered mails are all Office 365 users. So when we send a test mail to a recipient that has an on premise exchange = no problem,

a hybrid exchange = no problem,

gmail, outlook.com... no problem.

But only to office 365 recipients. I tried to send to those recipients from our own on premise exchange, and that is working fine.

I have no clue at this moment. We have SPF, DKIM, DMARC and reverse DNS setup, so that can't be the problem.

Is there anyone who had the same problem and who...

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