Someone used my domain name to email spam

So I go in to check my email the other day and I have 160 new messages, all of which are reject messages from spam blockers.

Some goober spammed a bunch of people with some bogus email, and aliased the 'from' email as a bogus email address at my domain name.

Is there anyway to prevent that?

Are there any dangers of which I should be aware from this activity?

Thanks!

 

that happens millions of times each day to most of us

you have your mail server - smtp . correctly configured and your SPF record in your nameserver straight and tight - hence you have nothing to worry.
else
learn to to do above - use search in DP forum or Google

 

SPF is designed to stop this sort of behaviour but it only works where the recipients implement SPF as well as the sender. Many of the ones that don't will end up blaming you for the spam. When the email system was designed, nobody even thought of doing things like this and hence no security controls were built in to it.

The other thing you might want to do is create an email template explaining what is happening and why it's not your fault and why there's nothing you can do about it. You can use this template whenever someone accuses you of spamming them. (don't bother with the spam-blocker reject messages)

Good luck.