is this backscatter or not

[Arvid Ephraim Picciani]

Hi,
I'd like to discuss if returning a mail that went through a mailing list, back 
to the sender can be described as backscatter. I sent the postmaster a mail 
becouse they filter mails that contains specific words and send a bounce to 
the sender. Now i'm preparing to dicuss this with him/her and would like to 
hear your opinion.
-- 
best regards/Mit freundlichen Grüßen
Arvid Ephraim Picciani