At 12:22 05/14/2002 Tuesday, Mitch Arnowitz wrote:
 >Hi and has anyone has a Klez problem with subscribers unknowingly being
 >signed-up to single, opt-in discussion lists & broadcasts? Also, heres a
 >link to an interesting article on the topic:
 >
 >ContentBiz Warning: How to Protect Your Email Newsletter List from Klez
 >attacks
 ><http://www.contentbiz.com/sample.cfm?contentID=2016>

No, since a three-way handshake (Open,CONFIRM) aka double opt-in is
required on my lists.  Nevertheless we have had problems of malware
sending to -REQUEST addresses from phony accounts, and having the
automated response then bounce.

Of course this was a problem BEFORE malware.

That's why we have out lists with

ATTACHMENTS= NO
LANGUAGE= NOHTML
SIZELIM= 250 (whatever)

Now that's not to say that this is bullet-proof, but so far, it has
really helped.

/Pete