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Require incoming SMTP connections to send HELO before MAI - security risk?

Discussion in 'Security' started by ckrewt, Apr 7, 2010.

  1. ckrewt

    ckrewt Registered

    Dec 22, 2007
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    Hello there,
    I am abit new to this, I want people in my /24 to be able to use my cpanel box to send emails, If i have the Require incoming SMTP connections to send HELO before MAIL option enabled they keep getting the standard error message "50 Access denied - Invalid HELO name (See RFC2821'" what i am worried about is having people use my smtp server to spam, is there any way to have my smtp server open so people on my /24 can send emails without any checks on exim but people outside of that /24 cannot?

    Sorry for the nubbish question as i said i am new to this just looking for some advise.

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