"Excessive bounces" when I'm not intentionally bouncing
I received the below warning, but am not knowingly bouncing anything.
What might cause this?
- Have I set something up wrong?
I use Thunderbird, and have the junk settings set to mark junk as such
but not move it anywhere (as this is a fairly new install: when it has
adequately learned what I consider junk, I intend to tell it to move
junk to my junk folder).
The spam filtering option in my email provider's web interface is set to
I keep very little on my provider's servers (so unlikely to be a
lack-of-space issue), and am not aware of my provider having any recent
- Is a spammer creating what look like bounces but are actually new spam?
Not sure if they would want to do this, or if they could do so well
enough to fool a Debian listbot.
- Is my email provider bouncing spam even with filtering "off"?
Their documentation contains references to 'bouncing' spam , but is
ambiguous as to whether this means a during-SMTP-transaction reject
(OK?) or a later "returning to [apparent] sender" bounce (noooo!) .
(That particular documentation appears to be for business customers, as
the settings page I have is the one documented at  which doesn't
--- If they are, what is a good way to ask them to stop?
Pointing them to https://wiki.debian.org/Teams/ListMaster/FAQ is an
obvious option, but are there better ones?
In particular, is there a risk that identifying the list operator as
Debian, and hence potentially drawing their attention to the fact that
Debian lists don't use what the wider world considers normal anti-spam
measures (rejecting non-subscriber posts, and address hiding in public
archives), might make the situation *worse*?
--- If they won't stop this, are there methods other than email to
comply with "must subscribe" rules?
I already use the web interface for most of my Debian list reading, but
I have a backport so I have to be subscribed to debian-backports .
A bot wrote:
Your membership in the mailing list Pkg-opencl-devel has been disabled
due to excessive bounces The last bounce received from you was dated
21-Nov-2018. You will not get any more messages from this list until
you re-enable your membership. You will receive 3 more reminders like
this before your membership in the list is deleted.