Thanks Russ,

The curious thing is that it was an Outlook message whereas the
receiving email handler is gmail. I would guess, therefore, that the
problem is occurring at the Fermilab end.

My gmail account seems to collect all spam coming its way - I check it
about once a week and mark wanted messages appropriately. To be
honest, judging by my own "drafts" mailbox, I suspect that my phantom
messages have never been sent. It's way too easy to get distracted :-)

Regards

Paul

On Fri, 16 Nov 2018 at 18:27, R P Herrold <[log in to unmask]> wrote:
>
> On Fri, 16 Nov 2018, Paul Richard Thomas wrote:
>
> > Could somebody explain why this is happening to those not versed in
> > these problems with office365 ?
>
> Every receiver of email decides the policies under which it
> will accept it, or indeed, whether it will accept an offered
> piece at all.  Anti-spam defense systems are the most common
> reason offered
>
> The owners of the Office 365 product, and those of Gmail have
> (probably) decided that the content from the list 'looks
> spammy' ... their choice, and that decision is applied on
> behalf of their subscribers.  Also, to avoid 'educating'
> senders of unsolicited email how to evade such restrictions,
> the criteria shift without notice and may get tighter or
> looser, depending on the whim of the email receiver that day
>
>
> The alternative approach is for a email receiver is to simply
> 'mark' such as with a spam-assassin score, their opinion as to
> how 'spammy' something is, and permit the mail user client to
> decide what to do with it
>
> I run under that latter system, and I see this as to your
> question piece:
>
> Return-Path: <[log in to unmask]>
> X-Spam-Checker-Version: SpamAssassin 3.3.2-r929478
> (2010-03-31) on (elided)
> X-Spam-Level:
> X-Spam-Status: No, score=-0.8 required=4.0 tests=BAYES_00,
>     DKIM_ADSP_CUSTOM_MED,
>     DKIM_SIGNED,FREEMAIL_FROM,
>     T_DKIM_INVALID autolearn=no version=3.3.2-r929478
>
>
> The theory is that an unhappy subscriber will complain, or go
> elsewhere
>
> These questions should properly be directed to your email
> handling firm (here: Microsoft or Google)
>
> -- Russ herrold



-- 
"If you can't explain it simply, you don't understand it well enough"
- Albert Einstein