Receiving a flood of emails from "Postmaster" is bad news. It means that your email address has been harvested by hackers. These hackers use your email address as the "reply to" and send out spam, bulk emails and junk email. ... Take steps to both stop the emails and prevent hackers from using your email address again.

What postmaster means?

1 : one who has charge of a post office. 2 : one who has charge of a station for the accommodation of travelers or who supplies post-horses. Other Words from postmaster Example Sentences Learn More About postmaster.

Is postmaster a spam?

Since most domains have a postmaster address, it is commonly targeted by spamming operations. Even if not directly spammed, a postmaster address may be sent bounced spam from other servers that mistakenly trust fake return-paths commonly used in spam.