How to avoid “no subject” emails in the archive?

Hi all I expect that this email, like for instance those from Laurie Knight, will appear on the Birding-Aus archive as “no subject”. Has anyone found a way round that, please? Maybe this is the issue, I’ve just noticed that most emails that have recently appeared in the archive as “no subject” appear in the “content analysis” (which I guess is from a spam filter) with comments like -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust My own rating was “no trust”! I’ve checked my IP address on dnswl.org and yes it is listed! But that should mean that I am “high trust” because dnswl.org is a ‘whitelist’. So maybe the archive spam filters misinterpret dnswl.org listing? (Should be a positive number, rather than –0.7, in the above example?). Or maybe I’ve been blacklisted somewhere else? My latest email was marked as ‘likely spam’ with reference to blogspot.com and livejournal.com (April 2010). I’ve haven’t found a way of accessing their black lists. BTW I know I did get blocked several years ago because I was legitimately sending emails to a couple of hundred people. Somewhere in the Internet that was rated as “too many”. Maybe others whose emails turn up as “no subject” (Denise Goodfellow is another instance) are simply those who have emailed numbers of people at the same time? Any help would be greatly appreciated. Michael Norris