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/usr/sbin/exim -bd -q60m <-- what does this mean?

Discussion in 'General Discussion' started by gundamz, Nov 20, 2004.

  1. gundamz

    gundamz Well-Known Member

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    mailnull 3572 0.0 0.5 5396 2560 ? S 00:02 0:00 /usr/sbin/exim -bd -q60m
    mailnull 3589 0.0 0.5 5376 2560 ? S 00:02 0:00 /usr/sbin/exim -bd -q60m
    mailnull 3591 0.0 0.2 4964 1264 ? S 00:02 0:00 /usr/sbin/exim -bd -q60m
    mailnull 3612 0.0 0.2 4964 1280 ? S 00:02 0:00 /usr/sbin/exim -bd -q60m
    mailnull 3629 0.0 0.3 5132 1584 ? S 00:02 0:00 /usr/sbin/exim -bd -q60m
    mailnull 3646 0.2 0.5 5376 2564 ? S 00:02 0:00 /usr/sbin/exim -bd -q60m
    mailnull 3653 0.0 0.2 4964 1248 ? S 00:02 0:00 /usr/sbin/exim -bd -q60m
    mailnull 3655 0.0 0.2 4964 1248 ? S 00:02 0:00 /usr/sbin/exim -bd -q60m
    mailnull 3656 0.0 0.1 4952 1004 ? S 00:02 0:00 /usr/sbin/exim -bd -q60m
    mailnull 3657 0.0 0.1 4952 1004 ? S 00:02 0:00 /usr/sbin/exim -bd -q60m


    These processes had been hooking on the server resources and causing a stir on the server load.
    If i kill it, i guess it will come back again. I bet a user on the server is sending large mail. How do i clear the mail?

    All is my conclusion. Any solution to fix this problem? will rebuild exim stop this from happening?
     
  2. chirpy

    chirpy Well-Known Member

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    Go on, have a guess
    It's exim processing emails in queue (q60m is run through the mail queue every 60 minutes).

    If you kill it, it will come back.

    Someone is possibly sending a large amount of email, or a large number of bounces are being generated.

    You can clear down your mail queue within WHM > Manage Mail Queue[*]

    The solution is to check the mail queue and find out what the queued emails are and why they're building up in the queue.

    Rebuilding exim will have no effect on this.

    [*] Deleting emails in the mail queue is generally a bad idea, as all you're doing is:

    a. deleting potentially valid email
    b. getting rid of the problem only temporarily
    c. not fixing whatever problem you have

    If you're still in the dark after this, then you might need to employ the services of a server administrator to help you understand what's wrong.
     
  3. gundamz

    gundamz Well-Known Member

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    Mailnull had been causing extreme high load on the server.
    Anyone know how to fix this problem?

    I do not want to pay just to fix this small problem.
    I am sure there's a solution. a FREE solution to be given on this forum.
     
  4. DigitalN

    DigitalN Well-Known Member

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    I think the best you will find will be the search function on this forum for your problem if you don't want to pay for professional administration services, so that you can take a sample of others experiences and piece them together to find what the issue you have is.
    No one is going to tell you, as there are so many possibilities, you will need to go through your mail logs and find where the problem is. You might have a spam problem, either incoming to one of your accounts or someone spamming an insecure script on your server.

    If you start by looking at your mail queue and mail stats within your whm, it will likely point in the right direction.

    Good luck with finding the problem.
     
  5. bjdea1

    bjdea1 Well-Known Member

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    Having Same problem

    We've having the same problem. We had over 198000 emails in the mail queue - this is a serious spam problem we're having. Can someone please help give some advice on trouble shooting for finding the spammers.

    Thanks
     
  6. chirpy

    chirpy Well-Known Member

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    I would recommend that you:

    1. Make sure you have no cPanel demo acounts
    2. Look at the mails in the queue to find out what they are and where they're coming from
    3. Use :fail: instead of :blackhole: for rejecting emails
    4. Install a Dictionary Attack ACL
    5. Install and anti-spam solution (e.g. MailScanner or exiscan)
    6. Depending on the results of 2. make sure you don't have vulnerable PHP or perl CGI files running

    If you don't understand how to do the above, or are none the wiser after doing so, then, as before, you should ask for the professional help of someone who does.
     
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