Prevalence of mailing-list bombing

[Andy Finkenstadt]

Greetings!

A disgruntled customer of ours has subscribed two addresses of people
here at Simutronics to what seems like every known mailing list in the
world.  The two addresses in question are "[EMAIL PROTECTED]"
and "[EMAIL PROTECTED]".

Is there any practical way of preventing this in the future?

Best regards,
Andy