Block emails from "blank" senders

[Philb]

I am receving several emails a day with no sender and no subject. I want to
block them, but I cannot enter them in my "email blocker" place because it
must follow a protocol - *.com etc.
I suspect these are used by spammers to confirm that there is a receiver on
the other end. They then send spam later to addresses which do not bounce
back their message.

 

[Luther]

This is a newsgroup for Business Contact Manager.

You should try your question in microsoft.public.outlook.