[Mailman-Users] two mailman installations..

2008-01-23 Thread Khalil Abbas 

Dear mailman guys..
 
I have a cent-os dedicated server with godaddy and is hosting my daily 
newsletter list on it .. my subscrier list has grown to over 77,000 and is 
growing rapidly that I will have to purchase another server in order to deliver 
the newsletter in the same day.. because godaddy's policy allows each dedicated 
server to send the maximum of 100,000 emails per day.. 
 
the question is, is there a way to prevent duplicate subscriptions? because 
people subscribe to my newsletter by email sent to me, then I collect all the 
emails and use the mass-subscribe option in the web interface.. and some 
subscribers may exist in the first server and not in the second one so that 
they will recieve the same email twice.. 
 
any ideas how to avoid duplicate subscriptions in different servers?
 
thanks..
_
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Re: [Mailman-Users] two mailman installations..

2008-01-23 Thread Brad Knowles 
On 1/23/08, Khalil Abbas wrote:

  the question is, is there a way to prevent duplicate subscriptions?
  because people subscribe to my newsletter by email sent to me, then
  I collect all the emails and use the mass-subscribe option in the
  web interface.. and some subscribers may exist in the first server
  and not in the second one so that they will recieve the same email
  twice.

There are no built-in features in Mailman to prevent duplicate 
subscriptions across different servers.

If you keep the official subscriber list in a back-end database and 
then you use sync_members, you should be able to split the list of 
subscribers and use the database to ensure that there aren't any 
duplications.

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