Office 365: Organization Queue Quota Exceeded

In Office 365 there are several throttling limits that administrators may encounter that impact mail flow.  One of these throttling limits is Organization Queue Quota Exceeded.   When organizations send a large amount of mail through the service – either by relay or direct submission – and the service is unable to relay (mail is…

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Office 365: Enabling and creating a distribution list for first release users.

I had a customer present an inquiry to us on the management and communication of release release settings and changes.  The customers goal was to:   Manage first release settings through PowerShell to enable and disable users in bulk. Create a mail enabled security group for mail distribution and permissions to other applications in the…

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Office 365: Domain verification by email validation…

In Office 365 domain verification was traditionally only available through DNS record validation.  When adding a domain to Office 365 a domain verification text record or mx record was provided.  This record would be added to your external DNS provider and after replication and global availability our queries would detect the presence of the record. …

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Office 365: Create a report of distribution group usage…

Occasionally we receive customer requests for generation of report data.  Today I received a request where the customer wanted to generate a report of distribution list utilization.  In essence they wanted to understand which distribution lists in their environment were in use.  It sounds like the goal would be to eventually clean up those distribution…

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Office 365: Mail flow delays through third party SPAM gateways…

This week I had a customer present with an interesting issue.  They have a partner company they work with that users a third party spam filtering gateway prior to allowing mail into their on premises environment.  They were observing that emails to this partner company were often delayed.  When engaging with the partner company it…

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Office 365: Bulk enabling auditing on Exchange Online Mailboxes

Auditing of mailbox operations are not enabled by default in Exchange Online.  It is the responsibility of the administrator to choose which mailboxes should have auditing enabled and then subsequently enable auditing on the mailboxes.  We have documented the process of enabling auditing on mailboxes in bulk at the following link:   https://support.office.com/en-us/article/Enable-mailbox-auditing-in-Office-365-aaca8987-5b62-458b-9882-c28476a66918   I…

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Office 365: Messages from external senders are originating directly on Office 365 servers….

Today I had an interesting case come across my desk.  A customer wanted to enforce that all external messages came through their third party cloud gateway.  In an effort to prevent bypassing the gateway and having mail traffic come directly into Office 365 the customer wanted to craft a transport rule to catch and quarantine…

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Office 365: DNS health checks and the Office 365 Portal

In recent weeks I have worked on several escalations regarding the DNS health checks in the Office 365 portal.  In August I published some guidance on how to review and handle these errors.  That article has since been updated to reflect new information and new portal behavior.  Please check out https://blogs.technet.microsoft.com/timmcmic/2017/08/15/dns-errors-and-warnings-in-the-office-365-portal/ for updated information.

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Office 365: Who can receive the weekly digest email…

In Office 365 we provide administrators the ability to access important information about the service via the message center.  At https://portal.office.com on the main administration page the message center option appears in the center view.     When selecting the message center option the administrator is presented with a list of notifications, announcements, and other…

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Exchange, Cluster, and Network Thresholds

Cluster failures due to transient cluster communications problems can often lead to databases failing over between nodes or nodes being removed from cluster membership.  For many administrators the occasional network hiccups that can drive up the likely hood of this occurring is a fact of life.  It is definitely more prevalent when cluster nodes are…

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