ISPs or corporate mail administrators usually have one of the following limits set or a combination of them; number of recipients for a single email. email limits in Exchange You can find out the limits for sending e-mails by contacting the mail administrator or your ISP. The limit is 500 recipients for 365 I would advise splitting into groups of 500 Or seeing if you can create mailing lists of groups of 500 then create a mailing list to include the mailing list, but this might fail as I have never used this. Thus, the limits have increased for the send and receive messages in Exchange 2013. Click on limits option on the left pane. If you don't see MaximumAttachmentSize, add a registry key and value. What's changed? In the Refresh Interval text box we can type a specific refresh rate in seconds. Answer. Please let us know if you need additional information. exchange 2016 maximum number of recipients per message This configuration controls the maximum number of recipients who will receive a copy of a... V-228359: Low: Exchange Audit record parameters must be set. In … Maximale Nachrichtengröße größer als 10 Log In … Set-Sendconnector " " -MaxMessageSize 30MB. We want to present the results in “descending” way. Rate limit Default value Exchange Management Shell configuration EAC configuration; Maximum concurrent mailbox deliveries: The maximum number of delivery threads that the Transport service and the Mailbox Transport Delivery service can have open at the same time to deliver message to mailboxes. That's not enough considering we have to send out 600 emails at a time to internal and external sources. And the reason for which I don't want to publish the message to topics is basically due to my requirement constraint. You can add up to 100 (one hundred) recipients per message in Outlook.com. Use Get-MessageTrackingLog Office 365 Reports . The Address Book limits apply not to an individual mailbox but the Exchange organization. 1. microsoft office 365 - Exchange Full Hybrid - Server Fault