As a Program Manager of Antispam in Office 365, one of the questions I am frequently asked is “How many messages outbound are we permitted to send per minute? Per hour? Per day?”
When I use the term “Office 365” I mean both our existing Forefront Online Protection for Exchange (FOPE) service, and our newer Exchange Online Protection (EOP) service. The following description applies to both of these services.
We take managing outbound spam seriously because ours is a shared service; there are many customers behind a shared pool of resources. If one customer sends outbound spam, it can degrade the outbound IP reputation of the service. This affect the successful deliverability of email for other customers. It is unfair to Customer A if Customer B spams and various 3rd party IP blocklists list the IP address that it uses. The actions of one directly affect the other.
FOPE and EOP do the following to control outbound spam:
The above is a summary of the most common controls we implement to reduce outbound spam.
Why are my messages being routed through the hight risk pool. This happens when i send an email which has words in the subject and then just my initial in the body of the email. i have a job open about this.
Really useful information. Very sensible too.