The user can't send new messages until enough email is deleted to bring the mailbox below the size limit. Prohibit Send: The user receives a prohibit-send notification email when the mailbox size limit is reached. This warning is intended to encourage users to delete unwanted mail.

Warning: The user receives an email warning that the mailbox is approaching the maximum size limit. Microsoft 365 Business Basic and StandardĪddress book limits across standalone plans FeatureĮxchange Online provides three kinds of notifications when a user's mailbox is nearing, or at, capacity: Global address lists: The maximum number of global address lists (GAL) that be created in an Exchange Online or Exchange Server organization. Offline address book limit: The maximum number of offline address books (OAB) that can be created in an Exchange Online or Exchange Server organization.Īddress book policies limit: The maximum number of address book policies (ABP) that be created in an Exchange Online or Exchange Server organization. The maximum size of a single offline address book is 1GB. Exchange remote connectivity analyzer Exchange remote connectivity analyzerA maximum of 20 address lists can be assigned to a single offline address book (OAB).Exchange Online mail connectors Exchange Online mail connectors.In-place eDiscovery & Hold In-place eDiscovery & Hold.PowerShell command reference PowerShell command reference.PowerShell – Office 365 PowerShell – Office 365.Exchange 2013 coexistence Exchange 2013 coexistence.Autodiscover infrastructure Autodiscover infrastructure.Exchange server architecture Exchange server architecture.Another possible option is malware that abuses our infrastructure and sends outbound spam on behalf of our users. Most of the time, the cause for Internal spam E-mail or outbound spam E-mail is a lack of awareness of our users. For this reason, another name that used is – outbound spam E-mail.

The term Internal spam E-mail describes a phenomenon in which the spam E-mail sent by our organization users.

Internal spam E-mail Articles that review the subject of – Internal spam E-mail.

Exchange online shared mailboxes