[Mailman-Users] Subscription Spam

Mark Sapiro mark at msapiro.net
Thu May 21 01:13:02 CEST 2015

On 05/20/2015 06:44 AM, Brian Carpenter wrote:
> Subscription spam is starting to become an issue with some of our mailing
> lists. Am I correct that the SUBSCRIBE_FORM_SECRET setting will help reduce
> the amount of subscription spam? Are there any other measures that can be
> done to reduce this type of spam? The pattern is one email address trying to
> subscribe to all the mailing lists of domain for several days. Banning the
> address works until a new email address is being used.

Yes, setting SUBSCRIBE_FORM_SECRET has so far been very effective.

Also, see the post at

Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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