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Multiple messages in email clients

How can I set an option on Dovecot to stop delivery of old messages throught POP and deliver only messages from specific date or "from now on" to all my domains mail users in the server? I read that zimbra server has such option "download email from now on".

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marked as duplicate by Ward, Ladadadada, Michael Hampton, Brent Pabst, Scott Pack Sep 26 '12 at 13:40

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

    
sorry for dublicate, in this post i tried to look at the problem from different point of view and try to explain why do I need this so badly. My boss is angry and I do not have much time.. Situation is very anoying... –  driftux Sep 14 '12 at 14:49
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2 Answers

If you have mails in your mail server queue and if you don't want deliver them you can remove all queued mails by using this command(you not specified your server os)if you are using centos/redhat server

postsuper -d ALL

This command will clean all mails and after running this your server will start sending mails from now on.

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Actually a problem is different. I have to MX servers(server1 - mx 10, server2 - mx 20) , and then I primary server back online after failure (hardware, internet, eletricity lost and etc) all desktop mail clients (MS Outlook 2000,2007,2010, Thunderbird, The Bat and etc) just redownload all mail through POP3. Inbox gets multiple copies off all email which are on the server. So MX failover is useless for me. How can I prevent them to redownload these messages then Server1 back online? –  driftux Sep 14 '12 at 11:33
    
I have already tried to explain my situation in this post serverfault.com/questions/427046/… but no one answer me. I definetly need to find out workaround. Any help will be appriciated. –  driftux Sep 14 '12 at 11:41
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why dont you try before go back from server B to A (or A to B) delete all messages in the server you are going to use? if you are using POP3 I bet you are downloading them too , not letting a copy at your server, then, after the failover you can "clean" the server you are gonna have as host for mails, and when your clients connect they wont anything new, so, no duplicate downloads will be.

You can use the plugin Expire for dovecot, I think could work for you.

http://wiki2.dovecot.org/Plugins/Expire

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Thank you for your answer. This dovecot plugin can do a trick. –  driftux Sep 18 '12 at 9:44
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