Date: 5/21/18 5:31 pm From: Katrina Knight <kknight...> Subject: Re: OT -- Question about several recent emails with no subject -- are these spam?
At 06:14 PM 5/21/2018 reeser wrote: >I've received several emails from what appear to be list >subscribers email addresses but there is no subject header and >when opened the email only contains a link. > >Should these be deleted? Are they spam?
Yes, they'e spam, or possibly something worse. The links may lead to malicious content - I'm not going to click on one to find out.
Someone is harvesting user names and addresses from various mailing lists then sending messages to the lists using them. All of the ones I've checked out originate from a server in Japan. If your mail client is capable of it, you can set up a filter that looks for "smtp.ocn.ne.jp" either in the Received: headers or in any header. Unless you get mail from people in Japan, you're not likely to be getting any legitimate mail from there.