Seems like something happened to Oracle.
I had just received an email from no-reply@oracle.com. This looks like a typical fishing mail. And apparently it is.
It's strange to see an email from oracle on behalf of usps.com that redirects to vertssert.postinfo-center.live.
The last domain is also freshly registered and the site is trying to look like usps.com.
Be careful with emails you receive and take care.