Mimecast + EOP, layered email security approach

[Rishank Ganguly]

Scenario: Company is Enterprise and hosted in Office 365. Nearly 1000 mailboxes hosted in Office 365.

3rd Party SPAM Filter: MIMECAST (Cannot be bypassed for Business reasons)

Question: We wants to implement 2 levels of Email Security, first at Mimecast and second with the help of EOP.

Is there any way, or any article, which states, these 2 spam filter solutions work together to achieve this requirement.

[#2]

Hi Rishank,

You can have 2 solutions as you describe.

First point your MX record from your domain name to your Mimecast then the delivery of email on next hoop point to the MX record that Office 365 says to use it. Then you have 2 anti-spam solutions before your users.

[#3]

Hi Nuno,
Thanks a lot for your reply!!
Do you have any reference article, which holds your statement. This is because, I am building a Proof of Concept.

[#4 · Accepted solution]

Hi @Rishank Ganguly,

Here you have an article that describes what you need.

https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/manage-mail-flow-using-third-part...

[#5]

thanks Nuno