[Solr Wiki] Update of "MailingListModeratorInfo" by SteveRowe

[Apache Wiki <wi...@apache.org>]

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The "MailingListModeratorInfo" page has been changed by SteveRowe:
https://wiki.apache.org/solr/MailingListModeratorInfo?action=diff&rev1=1&rev2=2

Comment:
added info about blocking persistent spammers and a link to the mail moderation section on the ASF committers' page 

   1. if it's someone trying to subscribe to the list, "reject" it, with a message in the rejection body explaining how to subscribe.  It's usually a good idea to CC `listname-owner@lucene...` on these rejections so that if the person is really confused and replies back with a question it will go to the right place.
   1. if it's not spam, even if it seems like it's to the wrong list, use "Reply-To-All" to both the "allow" and "approve" Addresses.  Doing both will ensure that if that user continues to send email w/o subscribing we won't continously have to allow their messages; and even if it's the wrong list, let it through and let the community point that out.
  
+ If you get a persistent spammer, you can block them - see http://untroubled.org/ezmlm/manual/Blocking-an-Address.html#Blocking-an-Address
+ 
+ More information about moderation here: http://www.apache.org/dev/committers.html#mail-moderate
+ 
  When in doubt, or if you have any questions, send email to your fellow moderators at `listname-owner@lucene...` for discussion.