Netzero.Net Cause Mail Problems

[Robert Dinse <nanook@eskimo.com>]

     Netzero has apparently implimented a brilliant policy of bouncing e-mail
that sits in a netzero mailbox for more than six months.

     This caused severe problems this morning as mail from a list was all
returned by netzero enmasse and severely overloaded the servers, exhausting the
process tables with smartlist and procmail processes trying to remove the
affected address from the dist.

     Problem is the address was already removed, but netzero just kept on
sending messages back that were sent six months ago. 

     I've recompiled the kernels to increase the size of the process table, but
if this does not resolve the problem and netzero does stop this absurdity, it
may be necessary to block all incoming e-mail from netzero in order to
preserve the functionality of our mail servers.