The maximum size allowed for an outlook letter. Sending large files using Outlook. Mail size limits in Exchange

Quite often, in the course of work, corporate users need to send large attachments through an email client, and they may face an error sending a letter.

Outlook

The thing is that in the Outlook mail client (including versions 2010/2013/2016) there is limit on the maximum size of an attachment to the letter - 20 MB. Moreover, it does not matter whether one large file is attached to the letter or several small ones - the limit on the total size of attachments will always be 20 MB.

When trying to send an email larger than 20 MB in Outlook, an error window appears - The attachment size exceeds the allowable (attachment size exceeds the allowed limit):

In the event that your mail server and the recipient's server support a larger size of mail messages, you can increase the attachment size limit in Outlook.

You can change the maximum attachment size limit in Outlook only through the registry; there is no such setting in the Outlook GUI.

Procedure

After the changes have been made, you can attach an attachment larger than 20 MB to the letter in Outlook (in our example, we attached a pst file of 58 MB to the letter).

In the event that your mail server or sender's server does not support large letters, when you send a large letter, you will receive an NDR-Non delivery report, which will indicate that the maximum message size has been exceeded. Below are the popular options for the text of such a bumper:

• Attachment size exceeds the allowable limit
• 552: Message size exceeds maximum permitted
• System Undeliverable, message size exceeds outgoing message size limit
• The message was not sent; reduce the message size and try again

MS Exchange

In Exchange, you can change the allowed letter size at three different levels:

• In the transport settings of the Exchange organization
• In the parameters of the sending / receiving connectors
• In the settings of a specific user's mailbox

The current limits can be viewed through the Exchange Management Console (EMC), but it's much easier and faster to use PowerShell. In the Exchange Management Shell console, or after connecting to Office 365 via a remote PowerShell session, run the commands:

Get-transportconfig | ft maxsendsize, maxreceivesize get-receiveconnector | ft name, maxmessagesize get-sendconnector | ft name, maxmessagesize get-mailbox administrator | ft Name, Maxsendsize, maxreceivesize

The commands should return something like this, containing the current limit settings:

• In the transport parameters of the entire organization, the size indicates that the received / sent message should not be more than 25 MB
• All connectors have a 10 mb limit
• For the administrator mailbox, the limit on the size of letters is not set (unlimited)

Naturally, the last command checks the limits for only one mailbox. You can deduce the limits on the size of letters for all users of the organization as follows:

Get-mailbox | ft Name, Maxsendsize, maxreceivesize

To increase the maximum message size (both received and sent) accepted by the Exchange Transport service from 25 MB to 100 MB, run the command:

Set-TransportConfig -MaxSendSize 100MB -MaxReceiveSize 100MB

The syntax of the command for changing the limit on the size of letters for connectors is the same, but the change command will have to be executed for each connector.

Set-SendConnector "Connector1" - MaxMessageSize 100Mb Set-ReceiveConnector "DefaultConnector1" -MaxmessageSize 100MB

Or for all connectors:

Get-SendConnector | Set-SendConnector -MaxmessageSize 100MB Get-ReceiveConnector | Set-ReceiveConnector -MaxmessageSize 100MB

Similarly, you can change the limit for all mailboxes in the organization:

Get-Mailbox | Set-Mailbox -MaxSendSize 100MB -MaxReceiveSize 100MB

The limits set in this way limit the maximum size of the message, regardless of whether it contains an attachment or not.

Using the web interface

There is another option - through the web interface. Open the Exchange admin center and go to the section mail flow -\u003e send connectors -\u003e organization transport options:

and set the required maximum investment. Please note that when sending to an external server, the attachment is encoded in the MIME64 format, which increases the total volume of the letter by about 30%.

If you try to attach files that are larger than the size limit, you will receive an error message. There are several ways to work around this limitation. For example, you can use a sharing service or compress a file.

Outlook limits the size of files you can send. This limitation prevents the computer from constantly trying to send very large attachments that exceed the limits of most ISPs. For an Internet email account. For example, Outlook.com or Gmail, the maximum file size together is 20 megabytes (MB) and for Exchange accounts (email), the default maximum file size together is 10 MB.

Save a file to the cloud service and send a link to it

There are many cloud storage services to which you can upload and then share large files. Some commonly used cloud storage services include OneDrive, Dropbox, iCloud, and Google Drive. If the file is stored in the cloud, you can include links to the document in the email message.

Compressing files

When you compress (zip) a file, it shrinks in size and may become less than Outlook's limits. The following articles provide instructions for compressing and extracting files for different Windows operating systems:

Reducing image size

If you are sending large image files you can automatically resize them to reduce its file size.

Saving a File to a SharePoint Server Library

If you are using Outlook in a business environment and are using SharePoint, you can save the file to a SharePoint library and send a link to the file. For instructions, see Share a document using SharePoint or OneDrive.

For Outlook 2010 and Outlook 2007, if you try to send a message with attachments, the message is too large " attachment size exceeds the allowed limit "Is displayed.

Problems with large attachments

In addition to the email provider's limitations on the total size of messages, keep in mind that large attachments are generally not recommended to be sent by email.

A large message may exceed the disk space quota for the recipient's mailbox. If the disk quota is exceeded for the recipient's mailbox, the user cannot receive other messages.

A large message can cause your mailbox to exceed the disk quota. All sent messages are saved in the folder Sent... Sending large attachments to other people also affects your mailbox quota. If the disk quota is exceeded, new messages can be blocked.

Increasing the size of attachments All files attached to messages are encrypted. Since the file attached to the message must be encoded, its size increases by 1.37 times. For example, if you are uploading a 5 MB file, the attachment size will be 6.85 MB.

Good afternoon, dear readers and blog subscribers, not so long ago we were considering changing the id teamviewer 11, today we will analyze another outlook 2007 and higher error and it sounds like this "The maximum allowed message store size has been reached." The symptoms of the problem are as follows, you try to get new mail, the process begins. It detects that there are fresh letters and starts receiving them, but after a couple of seconds, reports that there are problems and you need to perform a series of actions. Let's figure out what's the matter.

This is how error 0x5004060C looks like. You are immediately hinted that you need to reduce the amount of data in the message store by highlighting and deleting unnecessary messages using the Shift + Del combination. But you must agree that for an ordinary user, the question arises what kind of storage it is.

If you close this window, then you may be offered to clean up your mailbox, and then everything starts to take shape in its own way, the storage means your outlook profile, this is either a pst and ost file.

The mailbox size limit has been exceeded. Specify messages to delete and move, empty the Deleted Items folder, or move messages to archive.

You have two options here:

• To clear deleted messages, this is done with one button, but sometimes this may not be enough, since there may be no letters.
• Archive the mailbox, here you select either by size or by the date of receipt of the letter and start creating an archive. Archiving will create a separate pst file, which will contain all letters according to a certain criterion, this process is not fast and depends on your hard disk and the number of letters.

The maximum size of the ost and pst file in 2007 is 20 GB, outlook simply won't be able to work normally with large volumes

If deleting does not give a special effect, then I advise you to compress in outlook,

Default mail storage size

Let me now show in parrots what sizes are the default for ost and pst files. There are two types of records:

• Unicode files - MaxLargeFileSize and WarnLargeFileSize
• ANSI files (old format) - MaxFileSize and WarnFileSize

For Outlook 2003 - 2007

For Outlook 2010 - 2016

You can see the paths to the registry keys just below:

• Outlook 2003 HKEY_CURRENT_USER \\ Software \\ Policies \\ Microsoft \\ Office \\ 11.0 \\ Outlook \\ PST HKEY_CURRENT_USER \\ Software \\ Microsoft \\ Office \\ 11.0 \\ Outlook \\ PST
• Outlook 2007 HKEY_CURRENT_USER \\ Software \\ Policies \\ Microsoft \\ Office \\ 12.0 \\ Outlook \\ PST HKEY_CURRENT_USER \\ Software \\ Microsoft \\ Office \\ 12.0 \\ Outlook \\ PST
• Outlook 2010 HKEY_CURRENT_USER \\ Software \\ Policies \\ Microsoft \\ Office \\ 14.0 \\ Outlook \\ PST HKEY_CURRENT_USER \\ Software \\ Microsoft \\ Office \\ 14.0 \\ Outlook \\ PST
• Outlook 2013 HKEY_CURRENT_USER \\ Software \\ Policies \\ Microsoft \\ Office \\ 15.0 \\ Outlook \\ PST HKEY_CURRENT_USER \\ Software \\ Microsoft \\ Office \\ 15.0 \\ Outlook \\ PST
• Outlook 2016 HKEY_CURRENT_USER \\ Software \\ Policies \\ Microsoft \\ Office \\ 16.0 \\ Outlook \\ PST HKEY_CURRENT_USER \\ Software \\ Microsoft \\ Office \\ 16.0 \\ Outlook \\ PST

Now, by editing the necessary registry keys, you will eliminate the error "The maximum allowed size of the message store has been reached." I honestly do not imagine profiles that will be over 50 GB in size, this is how many letters and what they should be there is beyond my grasp. If you know other methods for solving this problem, then write about them in the comments under the video or article.

Many MS Outlook 2010 users have probably noticed that large attachments over 20 MB in size are blocked. If the allowed values \u200b\u200bare exceeded, the Outlook InfoManager issues a corresponding error message.

Due to this limitation, numerous attempts to send large attachments are also blocked. That is, in fact, you do not have the opportunity to send both a single large file in parts, and several small attachments, which in total exceed the specified limit in size.

Causes and prerequisites

This error message occurs because Outlook 2010 email accounts have a default limit of 20,480 KB. Many Internet service providers define exactly this value, in accordance with which the reference limits are calculated.

When it comes to email accounts mail within Microsoft Exchange Server, a similar error occurs when you try to add one or more attachments to a message with a total size of more than 10 MB. Moreover, this limitation is in no way connected with the maximum size defined within MS Exchange Server by the server administrator. These parameters are set in the "Properties of transport parameters".

In many ways, how the maximum attachment limit changes depends directly on the type of email account. mail used by Outlook 2010.

Changing the limit on your email account MS Server mail

If you are using an account under Exchange Server, you may notice that the new 20MB attachment size limit that is set by default in Outlook does not apply to email accounts. Internet mail. Another limitation applies here, which is set within the Exchange Server. If you are not an administrator (you have a regular user account) of the Exchange server, you will not be able to make the necessary changes due to the lack of appropriate access rights.

With administrator access, you can follow a few simple steps to change the size limit for attachments and attachments to messages.

First, we launch the Exchange Control Panel, where we need to go to the "Organization Configuration" section. Here we select the "Hub Transport" item.

Now go to the "Transport parameters" section and select "Properties" on the "Actions" tab. In the dialog box "Properties of transport parameters" on the tab "General" in the field of the maximum size of messages to send, enter the required value in Kilobytes. After clicking the "OK" button, the changes will take effect.

Resolve email account limitation issue Internet mail (POP3, IMAP, HTTP)

First you need to stop the Outlook application and then open the registry editor.

Here you need to find and select one of the following sections:

If you could not find the "Preferences" subsection in any of the specified paths, you must create it manually.

Now you need to enter the following data into the created or found subsection:

Parameter name: MaximumAttachmentSize

Parameter type: DWORD

In this case, the value of the specified parameter must be displayed as an integer, which corresponds to the maximum size for attachments. So, if you want to increase this limit to 50 MB, you must set the value in accordance with the decimal system (51,200 KB).

If you want to disable the limit on the allowed size of attached files, you must set the value equal to zero.

After all the manipulations, close the registry editor and start MS Outlook 2010.

The guide on changing the maximum allowable size for attachments in MS Outlook 2010 is based on the official Microsoft support.

You’ll receive an error message if you attempt to attach files larger than the maximum size limit. There are a few ways to work around this size limit, including using a file sharing service or compressing the file.

Outlook limits the size of files you can send. This limit prevents your computer from continually trying to upload very large attachments that exceed the limits of most Internet service providers. For Internet email account. such as Outlook.com or Gmail, the combined file size limit is 20 megabytes (MB) and for Exchange accounts (business email), the default combined file size limit is 10 MB.

Save your file to a cloud service and share a link

There are many cloud storage services to which you can upload and then share large files. Some popular cloud storage services include OneDrive, Dropbox, iCloud, and Google Drive. Once your file is stored in the cloud, you can include a link to the document in your email message.

Upload your file to a cloud service, such as OneDrive or Dropbox.

Note: The service you use generates a link to access your file. Your recipient can open the link to download your file.

After you upload the file, copy the link, and paste it into your email message.

Compress the file

When you compress, or zip, your file, it decreases its size, and it might decrease it enough to fit within the Outlook size limits for attachments. The following articles describe how to compress and extract files for different Windows operating systems.

Reduce the size of an image

If you're sending large image files you can automatically resize them to reduce their file size.

Save the file to a SharePoint server library

If you're using Outlook in a business environment and use SharePoint, you can save a file to a SharePoint library and share a link to the file. See Share a document using SharePoint or OneDrive for instructions.

For Outlook 2010 and Outlook 2007, if you try to send a message with attachments that are too large, the message “ The attachment size exceeds the allowable limit”Appears.

Issues with large attachments

Even if your message doesn’t exceed the Outlook or Exchange Server attachment size limits, there is a chance your recipient’s email provider might block messages that include large attachments. To help reduce the size of attachments that you send in Outlook, see.

In addition to mail provider limits on total message size, sending large attachments through email is not always the best solution.

Your message might cause your recipients' mailbox to exceed the storage quota If the recipients ’mailboxes exceed the storage quota, the recipients could be prevented from receiving other messages.

Your message might cause your mailbox to exceed the storage quota Each message that you send is saved in the Sent Items folder. Sending large attachments to other people counts against your mailbox size quota as well. When you exceed the storage quota, you could be blocked from receiving additional messages.

Attachment bloat When a file is attached to message, it has to be encoded. The encoding process causes attached files to become 1.37 times larger than they are on your computer. For example, if you send a 5 MB file attachment, the attachment is sent as 6.85 MB of data.

Efficiently share large files

There are several ways to share large files and collaborate with other people without sending attachments.

Microsoft SharePoint Server libraries If you have access to a SharePoint Server library, files can be saved to the library. For more information, see Save a file to a SharePoint library. SharePoint libraries can be accessed directly in Outlook.

If your organization uses SharePoint Server and provides you with a My Site, you can upload your files to your My Site Shared Documents library, and then include a link to the file in your message.

When you open the SharePoint document library to which you have uploaded your file, right-click the link to the document, click Copy Shortcut, and then paste (CTRL + V) the shortcut into your message.

OneDrive OneDrive is a free Microsoft service that provides password-protected online file storage making it possible to save, access, and share files online with friends or co-workers, from nearly anywhere. You can save Microsoft Office documents directly to OneDrive. For more information see, Introduction to OneDrive.

Shared network locations Save files in a folder that your recipients can also access. You can then send recipients a message containing a link to the shared location. On the Insert tab, in the Links group, click Hyperlink... If the shared location path or file name contains spaces, see Add links containing spaces to an e-mail message.

Photo sharing sites If you are sending pictures to someone, consider resizing those pictures before you send them. See Reduce the size of pictures and attachments. With modern digital cameras, each picture can be 3 MB or more when you transfer them from your camera. If you don’t want to resize your pictures, there are many photo sharing websites where you can upload your pictures, and then send a link to the pictures in a message.

Video sharing sites Even a short video file can be very large. Consider sharing video clips using one of the methods described in this article or to a video sharing website.

Security Note: When you attach a file to a message, you determine the intended recipient. If you upload a file to a shared location or service, make sure that you understand the privacy and security settings of that site, including who has access to your file.