Forum Discussion
Need expertise advise on an event of mass mail-send
Hi all,
We have a consultation from one of the application team about a mass mail that they are planning to send the number of emails is 60k, the challenge here is we cannot ask them to create group and send out an email because each of the recipient will be sent with a distinctive attachment and distinctive mail body content, hence no solution will work for now.
We have a hybrid exchange setup with an Open SMTP Relay that connects to around 32 Exchange onprem servers and these servers will route those mails to Office365 Exchange Online as all of our mailboxes are hosted in Exchange Online.
ALthough i am suggesting them to break these down to smaller batches and send in different time-slots giving 30 minute gap after each gap. I just want to be thoughtful and give the best suggestion, so what are all the things i would need to look into from Exchange standpoint and end to end monitor the situation.
4 Replies
Is there any chance we will hit Office365 throttling limits?
It depends where the messages are coming from. You might be OK if the messages are sent from an on-prem application using a properly configured hybrid connector to deliver to the EXO based mailboxes. The stated limit is 10,000 recipients per day per mailbox, but if the messages are not coming from a mailbox, it might not be subjected to this limit.
Yeah, we have not gone for HVE for some internal reasons and since we have a centralised mail-flow in our orgaization all of our applications use our Onprem SMTP Gateway and we have forbidden the teams from using Microsoft Gateways.....
Which is why i was looking for the checkpoints on where all i need to check and based on that guide the requesting team to go ahead.
