Question to list admin

A request to this lists admin (it is you Mark, isn't it?)

When sending an email to this list I get some automated
replies:

- 5x a message from donotreplyenterto.com with the
request to whitelist
my mailaddress (for 5 different accounts).
- 1x a message from noreplygooglegroups.com with some
"posting error"
error message.
- 1x a message from iruda.com Administrator with the notice
that the mail
was undeliverable.

Please do something about that problem, it is getting
annoying...

Regards and Thanks,
Adrian