Avatar of Gordon Tin
Gordon Tin
 asked on

What is spam solution and backup solution for exchange online?

background
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Azure AD
exchange online

I am now to Azure AD & Microsoft online.
We are planning to migrate email users from exchange2016 to exchange online.
Our exchange 2016 works together with + spam firewall "barracuda" + Symantec backup exec for backup solution.

My question1
Whether exchange online has built in spam engine/firewall or not ?

my question 2
Whether exchange online has built in function to backup?

If not >>> what is the common practice for exchange online to protect from spam and to backup
data??
ExchangeMicrosoft 365AntiSpam

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Last Comment
Rodney Barnhardt

8/22/2022 - Mon
David Favor

Best practices...

Block if...

1) IPrev lookups fail.

2) SPF lookup fails.

3) DKIM lookup fails or DKIM signature check fails.

4) Block by Geo if all else fails.

For example, currently I'm getting massive SPAM from a .ru domain which has #1-#3 all configured correctly.

To me, this makes no sense + it is as it is...

So when this occurs, you can block all mail from one sending domain/host or the entire Geo.

Since I don't work with any Russian companies currently, I can just block the entire Geo.
SOLUTION
Vasil Michev (MVP)

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