Mail to domains not hosted on office 365 will be delivered directly from the iis smtp server to the final destination it will not pass through the office 365 smtp servers.
Office 365 smtp relay logs.
Senders are not bound by the 30 messages per minute or 10 000 recipients per day limits.
Hi you can analyze the protocol logs if you had.
Smtp relay client smtp submission or direct send.
Often time the recipients did not get those messages that was send out from our sqlservers.
Microsoft 365 or office 365 smtp relay does not require the use of a licensed microsoft 365 or office 365 mailbox to send emails.
Then click on more settings outgoing server to set up your smtp settings.
Here s how you can set up office 365 smtp settings.
To set up an smtp relay you must first create a connector in office 365 to accept smtp transactions.
Mail server ip address host name the smtp relay server that wants to relay mail to the 365 mail infrastructure will need to know what is the pubic.
This connector will receive smtp relay transactions from the application or device.
Once you log in to the outlook mail app use the toolbar and navigate to settings mail pop and imap.
If some or all of your mailboxes are in office 365 there are a few options available.
The smtp relay server that wants to relay mail to the office 365 mail infrastructure will need to provide credentials username password using the basic authentication protocol.
Before you attempt to create a connector be sure your account has the proper exchange online permissions.
We have a quite a few servers in the company that allow to relay smtp through our current exchange environment.
Microsoft 365 or office 365 smtp relay has higher sending limits than smtp client submission.