[nos-bbs] Strange messages

[Raymond Quinn]

Over the last two days, I have noticed some apparant attempts to send mail. 
This is one example  in /jnos/spool/mail/check.txt.

They appear to be from the same Hotmail address, but the IP addresses and 
the "received from" address and domain are always different. The Subject and 
the To: address are always the same along with the "Content-Type:" 
information. Here is the latest, with my IP addresses removed.

>From fdyrdyr898 at hotmail.com Fri Dec  2 04:56:05 2011
Received: from 71.130.72.53 by w6ray.ampr.org (JNOS2.0i) with SMTP
        id AA13775 ; Fri, 02 Dec 2011 04:56:05 PST
Received: from  ([186.124.100.28])
        by xx.xx.xx.xx with SMTP;
        Fri, 02 Dec 2011 06:47:55 -0600
Message-ID: <uly3n1q55c3$$$--64r0-w at 91d5ch3>
From: "" <fdyrdyr898 at hotmail.com>
To: <smtp at k888.tw>
Subject: BC_xx.xx.xx.xx
Date: Fri, 02 Dec 11 06:47:55 GMT
MIME-Version: 1.0
Content-Type: multipart/alternative;
        boundary="----=_NextPart_000_000D_01C2CC60.49F4EC70"

The Subject is my public IP address preceded with BC_.

Is this something I should worry about? The IP addresses in question are 
from all over the world and some of the oomains don't even exist. This 
example doesn't even include the domain in the "Received: from" line.

73 de Ray W6RAY
Visalia, CA
SJVBBS