On Wednesday 26 September 2001 8:21 am, Euchner Martin wrote:
I'm not certain whether anybody can send stuff to this list, regardless of being subscribed or not. Thus, this sounds as a minimal precaution to make sure that any posting origins just from an authorized email address, where authorization means that the originator has been registered by the mailing list administrator. Is the listserv system able to check this? Would this help?
I don't know about the ability of listserv to check this but it is generally a very effective measure against spam.
Typically what happens is that posts that don't come from subscribers get forwarded to the list admin for approval prior to posting. Most list software also offers either user or admin driven whitelisting so that people who are subscribed at one address but post from another (or several others) don't need to have their posts approved every time they post. The main disadvantage of this scheme is list becoming partially moderated.
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