>Ok. Now *I'M* really worried!!
 
>I am now very panicked and am not sure how I should proceed. I'm a
>relatively new list owner and would welcome helpful suggestions as to
>(specifically) how to proceed.
 
Besides the advice already offered, I've updated my list's filter=
keyword.  Here is my "standard" (well, slightly editted)
 
* Filter= Also,*postmast*@*,*postmstr*@*,*@ax.com
* Filter= *maiser*@*,*@nocmsmgw*,[log in to unmask]
* Filter= *@*CYBERSELL.COM,*@*.SELL.COM,*@*roularta.be