How to Block a domain that has hyphen in the name in O365

Occasional Visitor
How to Block a domain that has hyphen in the name in O365
2 Replies

There's nothing special about domains with hyphens, you can add it to the spam block list just as any other domain.

@Vasil MichevBlocking using the Spam section of 365 doesn't block, it just files to the quarantine meaning an email from a domain that you've "Blocked" still needs to be reviewed and dealt with. The only way (I've found anyway) to actually BLOCK a domain is to use transport rules. Transport Rules don't like hyphens.

 

I can imagine this is what the OP is referring to.