Hi Forum
I have an Exchange 2013 server. Recently got hit by spams like users getting spam from your own domain.
ie, Mailbox user alan@myboomer.com get spam emails from alan@myboomer.com.
I thought out of the box, Exchange 2013 will require authentication before accepting emails like that.
I can add a SPF record in the public internet to reduce the spam.
I would like a built-in Exchange 2013 method to stop this kind of spam.
Please advise
Many thanks in advance
Regards
Michael