[Retros] Bad loop

[François Perruchaud]

Dear retro friends,

I feel very confused about the trouble I brought.
The problem was a bad result of a test on my e-mail client Thunderbird. 
Strangely, I'm not absent !
A few weeks ago, I tested a filter to send back messages. The keyword 
was *test*  in the "Subject" field.
I tested the filter (It worked fine...), and ... completely forgot to 
delete it.
Today,
- my computer was on, Thunderbird was open and I had to leave,
- Thunderbird received a message with the right keyword (Christmas 
con*test*),
- unfortunately, it was a message from a mailing list.
and the loop began...

Do forgive my stupidity.
I just hope it can give somebody an idea for a retro problem !

Regards,
François Perruchaud