For the reasons Dr. Okubo cited, Martin's two-stage procedure is probably better for the purpose. I've administered the Megaco list on three systems now: majordomo, listserv, and mailman. Of them all, only mailman allows me to specify spam filters, to a limited extent. I have to be extremely careful, because IETF rules really do not permit any hint of moderation of true list discussion. However, it's amazing how effective a simple rule like: "Hold messages without a specific addressee" can be. -----Original Message----- From: Folts, Harold [mailto:foltsh@NCS.GOV] Sent: Wednesday, September 26, 2001 8:47 AM To: ITU-SG16@MAILBAG.INTEL.COM Subject: Re: Proposed Change to ITU-SG16 Mail List Procedures Greetings, There is also another way to limit posting to the list that does not involve the two-step process. The list can be limited so that only those registered for the list can post to it. I know that is a feature of majordomo that I use for some of my lists. Hal

-----Original Message----- From: Meyer, Greg W [mailto:greg.w.meyer@INTEL.COM] Sent: Tuesday, September 25, 2001 9:17 PM To: ITU-SG16@MAILBAG.INTEL.COM Subject: Proposed Change to ITU-SG16 Mail List Procedures

Dear ITU-SG16 Experts:

I have noticed a dramatic increase in SPAM on the ITU-SG16 mail list. As administrator of the list, I would like to hear about a proposed change that will decrease the amount of SPAM and other mail messages including potentially harmful email (viruses, etc.).

I can set LISTSERV to require the sender of a message to acknowledge the message before LISTSERV will send it. So to send a message, you would send it in the usual way but before it gets sent to the mail list, LISTSERV will send you a message. If you respond to the message, you authorize LISTSERV to send the message. Since most SPAM is spoofed, the "sender" will not acknowledge LISTSERV and the message will not get sent.

I would appreciate hearing if there are any concerns with this method before I implement it. I will follow-up this email later to announce what action I have taken to this ITU-SG16 list.

Thank you,

Greg Meyer Intel Corporation email: greg.w.meyer@intel.com

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