I had to deal with a “huge” mail.que file this morning and thought of letting you know how to handle similar issues.So, here is the scenario

Came to know about this issue only when SCOM alerted for a low disc space
On one of the hub transport servers, the mail.que file reached to 148GB (unbelievable)

A lil about the mail.que file:

It is very easy to send large video files via email after reading this article. Here I am going to show you possible methods to send large video files through the mail. When you take video with an HD cam or with your mobile, you will get a very big size video file.
#3 Using Services that allows sending Large Files. If you feel that the above two methods are difficult to send large files over email then you could find a large number of large-file-sending services on the internet. There are many services which provide free and paid services.
Sign-in to your Gmail account and click the COMPOSE button located at the upper left to open email.
The benefits of sending large files through cloud storage. At the end of the day, sending large files through cloud storage is the safest and most cost-effective way to go. Cloud storage has far more benefits than other methods, including: Ease-of-use. You can send large files through an email invitation or a direct link.

Jan 16, 2019 Below solution will help you avoid messaging downtime, if your mail.que file is getting too large or consuming a lot of space on your disk drive at a critical stage which can cause major impact to mail flow or even Exchange auto shutting down its services, however, be sure to later properly investigate the root cause of the mail.que file growth.

Can obd2 u581 software update. The mail.que file temporarily stores all emails before it is delivered to the target. It is an ESE database which means it is similar in architecture like an Exchange mailbox database, the edb file.

As per a TechNet article

A queue is a temporary holding location for messages that are waiting to enter the next stage of processing. Each queue represents a logical set of messages that a transport server processes in a specific order. Queues exist only on servers that have the Hub Transport server role or Edge Transport server role installed.

Let’s take a look at the other files residing in this location:

Trn.chk – Checkpoint file like E0x.chk in exchange

Mod edit vst crack. Trn.log – The transaction log file which is getting committed now. Similar to E00.log in exchange

Trntmp.log – The next transaction log file which is created in advance.

Trnnnn.log – Next transaction log file created when Trn.log reaches its maximum size.

Trnres00001.jrs – First reserve log file. Only used when the hard disk drive that contains the transaction log runs out of space to stop the queue database cleanly

Trnres00002.jrs – Second Reserve log file.

Temp.edb – Temp database used to verify database schema on start-up.

Back to the issue:

How To Large File From Qq Mail To Excel

You need to know 2 important terms before we proceed since this issue could have caused due to a combination of both:

PipelineTracingEnabled: This is used for troubleshooting purposes and is not enabled by default.
MaxDumpsterSizePerStorageGroup: This is for Exchange 2007. The maximum size of the transport dumpster queue per storage group. This is a universal setting for all storage groups; you can’t set variable sizes for each storage group. The recommended size is 1.5 times the maximum message size that can be sent. For example, if the maximum size for messages is 10 megabytes (MB), you should configure the MaxDumpsterSizePerStorageGroup parameter with a value of 15 MB. Read more here

You can use the cmdlet: Get-TransportServer | fl to get these details.

In my case, tracing was enabled and the dumpster was specified to be 50GB.

Enough talking and lets delete it now

Open Qq File

This is the suggested way to get rid of the old mail.que file and get a new one without any downtime. I proceed under the assumption that you have multiple hub transport servers to process emails so, no emails will be processed at the time of this change. This
should take about less than a minute. I will call the Hub transport server HUB01. Remember that steps 6-8 are very important and will ensure none loses emails

Login to HUB01
Open exchange management shell and run “Get-TransportServer ” HUB01″ |fl
Here, look for PipelineTracingEnabled. This should be set to False. If not, run
Set-TransportServer HUB01 -PipelineTracingEnabled $False
MaxDumpsterSizePerStorageGroup is in MB’s and not GB’s
MaxDumpsterTime : 7.00:00:00
If not, run
Set-TransportConfig -MaxDumpsterSizePerStorageGroup <size> -MaxDumpsterTime <timespan>
Now run “Get-Queue” and take a look at the count of messages in HUB01
Goto services.msc and Pause the Microsoft Exchange Transport service
Again, run “Get-Queue” and ensure all pending messages are “zeroed” out
Once messages pending becomes zero, stop the Transport service
Move the mail.que file and all others to a new folder in the same location
Start the Transport service
Take a look at the queue again
You should see that messages would have started getting delivered
Now you can backup or safely delete the old mail.que file

Ratish Nair
MVP Exchange
Team@ MSExchangeGuru

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