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max emails issue

Discussion in 'E-mail Discussion' started by gsbe, Nov 18, 2003.

  1. gsbe

    gsbe Active Member

    Jul 27, 2003
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    Nashville, TN
    What are the security implications of making the maximum number of emails sent per hour unlimited on a shared web server?

    I have a client that created a custom listserv script in PHP. This script sends out all of its emails at once using the mail() function. Many of the lists have 1000+ users.

    The emails are being sent by user 'nobody'. Looking at my relay statistics and bounced messages, there is clearly a coorelation between emails being processed before this max number and returned as 'unrouteable domain error' emails after the max number.

    When I make the max number of emails sent per hour = 0 (unlimited) and then restart Apache and EXIM, the script runs flawlessly.

    1. Would I be opening my server up to potential threats and/or crashes by allowing an unlimited number of emails to be sent per hour?
    2. Is there a way to set the max number of emails sent per hour individually for each user?
    3. Should I ask the client to rewrite the application utilizing a cron job (see below) to maintain my server's security?

    Here's a suggestion I found on the web, do you agree?
    Thanks for your help.
    #1 gsbe, Nov 18, 2003
    Last edited: Nov 18, 2003

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