Maximum carrier mailbox size: If the arbitration mailbox exceeds this limit, messages that require moderation are returned to the sender in a non-delivery report (NDR). NOTE: If the PST is corrupted/corrupted, your rules or even Outlook will not work. In this case, you need to repair the corrupted PST file and recreate the rules. You can repair and restore PST items like emails, calendars, contacts, etc. using an advanced Outlook repair tool like Stellar Repair for Outlook. This utility is a safe and easy way to recover data from corrupt/damaged PST. It is compatible with Outlook 2019, 2016, 2013 and earlier. This article describes the limits of Microsoft Exchange Online If users still reach the rule limit, they should examine their rules to see if they can be combined or truncated. Using search folders or custom views can reduce the number of rules used. Note You cannot increase the size limit for rules in Exchange Server 2003. Filter mailboxes by attributes: This method requires that all mailboxes use a single filterable attribute.

For example, receiving and sending limits are enforced to combat spam and mass-mailing worms or viruses. These limits help protect the health of our systems and keep our users safe. Some email clients may have lower message size limits or limit the size of a single attachment to a value below the Exchange Online message size limit. MAPILab Rules for Exchange is a program for creating and managing Exchange Server and Small Business Server 2000/2003 server-side rules for processing incoming messages. It offers more flexibility and functionality than server-side rules created in Outlook. It supports all kinds of messages. Version 2.2 I couldn`t find any documentation that specifically references this limit for the on-premises version of Exchange. but I found a confirmation reference for a strict Exchange Online limit (which is admittedly not always the same): Transfer limit: The maximum number of recipients that can be configured for an Inbox or transport rule with a redirect action.

If a rule is configured to redirect a message to more than that number of recipients, the rule is not enforced and messages that meet the rule condition are not redirected to one of the recipients listed in the rule. How often a message is redirected by transport rules: The number of times a message is redirected based on transport rules. For example, the Exchange Tailspin Toys organization has a transport rule to redirect any message sent to user A to user B who is in the Exchange Contoso organization. Within the Contoso Exchange organization, there is a transport rule to redirect any message sent to user B to user C, who is in the Exchange A organization. In this case, the message is ignored and a non-delivery report (NDR) is displayed with the status code and the rejected message 550 5.7.128 TRANSPORT. REGULATE. RejectMessage; The number of transport rule loops is exceeded and the rejected message is sent to user A. We use the X-MS-Exchange-Transport-Rules-Loop header to determine how many times a message has been redirected by transport rules. This header persists beyond Exchange organizational boundaries. For distribution groups stored in an organization`s address book, the group is counted as a recipient.

For distribution groups stored in the Contacts folder of a mailbox, group members are counted individually. By the way, you might think that if you could just force all rules to be client-side rather than server-side, you could save space by keeping all these rules locally on the computer where they are needed. However, this assumption is false because Outlook stores all rules on the server, even those that should only run on that computer. The following list contains limits that apply to journal rules, transport rules (also known as organization-wide rules), and Inbox rule limits. Inbox rules are configured by individual users and applied to messages sent and received by the individual user`s mailbox. Recipient rate limit: To prevent unsolicited bulk message delivery, Exchange Online has recipient limits that prevent users and applications from sending large volumes of email. These limits are applied per user to all outgoing and internal messages. Older versions of Outlook, which stored client rules in both client- and server-based rules, took advantage of limited disk space, so users could have many more rules.

This little trick no longer works because all rules, client and server, are stored on the Exchange server and are subject to the size limit. Maximum folder hierarchy depth: Specifies the maximum number of levels in a mailbox`s folder hierarchy. The mailbox owner can`t create another level in the mailbox folder`s folder hierarchy when this limit is reached. The amount of mailbox storage available is determined by the user`s mailbox type and subscription license. Administrators can reduce the maximum mailbox size per user or globally. This example reduces the rule quota to 150 KB for the mailboxes specified in the file C:My DocumentsJunior Managers.txt. 1 This is the default limit. Administrators can change this value for their organization. 2 This is the default for Exchange Online organizations. Administrators can change this value to a maximum of 30 days for mailboxes in their organization. For more information about Outlook rules, see Slipstick or MSOutlook.info. 1 This is the storage quota for the Recoverable Items folder, not the quota for the entire archive mailbox.

The storage quota for the archive mailbox is unlimited for users with an Exchange Online Plan 2 license or for users with both an Exchange Online Plan 1 license and an Exchange Online archive license. For more information about increasing the recoverable items quota, see Increase the recoverable items quota for archive mailboxes. Here are Exchange Online limits for various service scopes, including address book limits, mailbox store limits, and reporting and message tracking limits, to name a few.