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About Exchange Online SMTP relay limits

Anonymous
2019-04-17T07:05:04+00:00

Please teach me about Exchange Online SMTP relay limits.

I am assuming the following scenario.

1. Multiple  employees send e-mail to all employees (3000 people) from multifunction machine at once.

2. Multiple employees send e-mail from distribution machine to distribution group simultaneously.

※Distribution group includes external users.

I looked the next URL.

I'm concerned that other restrictions prevent me from sending emails from multifunction devices.

So,,, Please teach me..... about all Exchange Online SMTP relay limits....

https://docs.microsoft.com/en-us/Exchange/mail-flow-best-practices/how-to-set-up-a-multifunction-device-or-application-to-send-email-using-office-3

Features of Office 365 SMTP relay

Office 365 SMTP relay does not require the use of a licensed Office 365 mailbox to send emails.

Office 365 SMTP relay has higher sending limits than SMTP client submission; senders are not bound by the 30 messages per minute or 10,000 recipients per day limits.

Microsoft 365 and Office | Subscription, account, billing | For home | Windows

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Anonymous
2019-04-17T09:49:48+00:00

Hi there,

SMTP relay- Reasonable limits are imposed. The service can't be used to send spam or bulk mail. Sent mail can be disrupted if your IP addresses are blocked by a spam list.

About SMTP client submission- 10,000 recipients per day. 30 messages per minute. Requires authentication-Office 365 user name and password required.

For your scenario you can try Option 3: Configure a connector to send mail using Office 365 SMTP relay any other option will not fit for you.

Thanks,

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  1. Anonymous
    2019-04-25T15:57:47+00:00

    Hi Tarouchabi,

    Do you have any further question?

    Best regards,

    Shyamal

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