EXCHANGE   Exchange – Message queue file mail.que large size



Symptom: Large mail.que file size

Last week my Icinga started alerting about low free space in my Exchange server disk.
After using a software to scan for file sizes I realized there was a too big mail.que file.
Exchange - Message queue file mail.que large size

This is the file in which exchange manages its queues before finally delivering emails. It is usually located in <Exchange_Installation_Path>/TransportRoles/data/Queue

Solution:

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EXCHANGE   Exchange – Cannot remove exchange certificate



Some days ago I tried to cleanup old certificates from my Exchange servers, but I received the following error:

Exchange - Cannot remove exchange certificate

[PS] C:\> Remove-ExchangeCertificate -Thumbprint D09EDD6D5F18C175254AB97046AAAAAAAAAAAAA

Confirm
Are you sure you want to perform this action?
Remove certificate with thumbprint DD09EDD6D5F18C175254AB97046AAAAAAAAAAAAA from the computer's certificate store?
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [?] Help (default is 
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EXCHANGE   Exchange 2013 – Cumulative Update 21 released



In June 2018 Microsoft released Cumulative Update 21 (build 15.00.1395.004) which is the last planned quarterly update for Exchange 2013 (https://blogs.technet.microsoft.com/rmilne/2018/06/19/exchange-2013-cu21-released/)

I was not sure about updating my Exchange 2013 directly from CU12 to CU21. It is supposed to be supported by Microsoft. Maybe I could install an intermediate CU before but, anyway, I decided to move on.Read more

Windows   Windows – .NET Framework 4.7.1 install stuck / hangs



I needed to install .NET 4.7.1 to allow updating Exchange 2013 to CU 21.
This is the installer I downloaded and tried to install: https://www.microsoft.com/en-us/download/details.aspx?id=56116

But the installation never ends. It remains stuck without progressing in the “Installation progress” bar. Tested both with offline and online installation:
Windows - .NET Framework 4.7.1 install stuck hangs

To install .NET Framework 4.7.1 download the msu package from the following link:… Read more

EXCHANGE   Exchange – Setting automatic completion time for Mailbox Move Request



When performing mailbox migrations using the New-MoveRequest, the movement is performed online while the user is using the mailbox without suffering outage until the end.
Only when completing the movement there are some seconds during which the user mailbox is not online.

Thats the reason to use the parameter “SuspendWhenReadyToComplete“. It moves almost all the mailbox except the … Read more

EXCHANGE   Exchange – Mailbox folders permissions to other users



A user asked me the way to grant permissions to other users to access to some of his mailbox folders. And for certain folder only read-only permissions.

Let’s suppose “testuser1” wants to allow accessing some folders to “testuser2”.

Permission configuration (Outlook)

First of all, “testuser2” must have “Reviewer” (read-only) permissions on the mailbox root
Exchange – Mailbox folders permissions to other users 1

Exchange – Mailbox folders permissions to other users 2

Then, configure the permission … Read more

EXCHANGE   Exchange – SMTP error: 550 5.7.1 Client does not have permissions to send as this sender



Problem

Last week I was testing the IMAP/SMTP connection of my Exchange 2013. Unexpectedly Outlook returned the following error:
Exchange - SMTP error 550 5.7.1 Client does not have permissions to send as this sender

The message does not appear completely but seems to be “550 5.7.1 Client does not have permissions to send as this sender”. Obviously the user does have the permissions (the user was the owner of the mailbox itself).

Resolution

Thanks … Read more

EXCHANGE   Exchange 2013 – IMAP NTLM authentication error



Exchange 2013 can produce IMAP issues when trying to authenticate. This is a known bug in CU9 and CU10 but in my CU12 scenario also happens.

The IMAPSettings EnableGSSAPIAndNTLMAuth atribute must be set to False in order to solve the problem.

Symptoms

Yesterday, when one of my users asked me how to configure the email client using IMAP I realized … Read more

EXCHANGE   Exchange – Error 130 using Netbackup with DAG passive node



When I was migrating my Exchange platform from 2010, I ensured that the backups using Veritas NetBackup were also working in Exchange 2013, both against the active or passive node of the DAG, and also the granular backups

Sypmtoms

At a certain moment, the backups started to fail (thanks I am monitoring the transaction log disks free space using … Read more

   Exchange 2013 – Exporting/importing mailboxes to a PST via Powershell



Stop using Outlook to export and/or import PST for your mailboxes. By using the Powershell commands (New-MailboxExportRequest and New-MailboxImportRequest) I have saved much time. And they come with some useful options.

Here some simple and interesting examples:

Simple mailbox export

[PS] C:\> New-MailboxImportRequest -Mailbox "user1" -FilePath "\\MYSERVER\PST\user1.pst"

The path must be an UNC path, a shared folder. After executing the … Read more