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Sending e-mail without authentication after logged

Discussion in 'E-mail Discussions' started by deieno, May 4, 2009.

  1. deieno

    deieno Well-Known Member

    Nov 16, 2003
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    Floripa - Brazil

    I found a situation on our environment that is really unpleasant for us and our customers.

    Imagine this hypothetical situation:

    my hosting company domain is: a
    and the customer domain is:

    The customer create his e-mail account on outlook that is He did a good authentication to send e-mails. From now his ip is allowed to send e-mail from our server for 30 minutes.

    Now this customer creates an account on outlook express without password, the account name he create is

    And then... the e-mail goes to any place he want.

    I know this a hypothetical situation, but let´s face. Things like that can happen.

    What I want to know is, if doesn´t exist, is there anyway to prevent other users already autenticated send e-mails from other domains?

    I know disabling tailwatchd will force authentication all the time but, other than that, is there any other solution?

    I talked with cpanel's support about that and it was recommend me to use the "/etc/mailhelo" option, but I didn´t understand very well how it´s work

    Can anyone help?
    thank you
  2. cPanelDavidG

    cPanelDavidG Technical Product Specialist

    Nov 29, 2006
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    Houston, TX
    cPanel Access Level:
    Root Administrator
    No other solutions are natively supported at this time.

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