Forum Discussion
Audit and log metods for smtp.office365.com
First of all, you should not be using O365 for bulk emails, use some of the 3rd parties that specialize in that. If you do use it, the level of details you will be able to extract depends on the exact method you use for sending, in most cases your best bet for any mail flow related information will be the message trace logs: https://docs.microsoft.com/en-us/office365/securitycompliance/message-trace-scc
Can you recomend any free/open source tool? Or any metod work around this?
Wich time we have to wait between authentications? Any page of microsoft with this information?
Microsoft doesn't publish the exact limits for all scenarios, but in most (non-bulk) scenarios you should be OK. I still wouldn't recommend using O365 for sending such messages, and any of the third-party tools (MailChimp, SendGrid, Mandrill, whatever) would offer you more flexibility anyway.
In my a case the are a application that process several claim check´s and PDF`s, sending email for each one using library and object´s functions. Normaly is used the SMTP server of the client, account exclusive created for this purpose, and some of them have Office365 licencing.
In the application, in some processing, can be send 300/400 email´s for diferent accounts in minutes.
It's difficult sometimes to use other thing. The client already pay´s for the licenses that they have.I'm going to invest the solutions mentioned.
Controle time and know limits with more details for Office365, would be good.