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  1. #1
    Join Date
    Jan 2005

    Sending Mass Mail (50.000+)


    we are running a big party-picture website with more then 250.000 users.
    ~100.000 of them are signed up to a newsletter we send 3-4times a month (or would like to send!).

    Currently we have 1 Webserver (debian, 32gb ram, 8x xeon) with a valid PTR and SPF record, that runs a Cronjob and send the mails with PHP to localhost sendmail.
    Unfortunately i see a lot of error messages in the log.
    I think its because sendmail somehow sends too fast to the smtp servers from the users and gets blacklisted for around 24hours.

    I am thinking about to set up an exim4 or postfix server to gracefuller handling of those mails. The webserver will send to the local exim or postfix-server, and the local mailserver to the extern servers.

    Do you guys have any other solutions?
    Maybe some 3rd Party massmail providers or something?


  2. #2
    Join Date
    Feb 2004
    Have you look at this 3rd party massmail provider

  3. #3
    Join Date
    Oct 2009
    UK - London
    If you are able to, you could code a PHP script that say sends 10 emails then waits 15 seconds and sends the next 10 etc. - this is how WHMCS billing system now works with its mass mail feature and it is very successful.

  4. #4
    Join Date
    Jan 2005
    thank you for your solutions.
    the problem with the sleep() solution is, that newsletters should stay "new" meaning the 50.000 ppl should get it in like the same range of more than 3-4hours.

  5. #5
    Join Date
    Oct 2004
    Kerala, India
    Have a check of Phplist. It helps sending mails by batches.
    David |
    Affordable Server Management Solutions sales AT cliffsupport DOT com
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