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no IP address found for host

Discussion in 'E-mail Discussion' started by pixelstore, Oct 24, 2012.

  1. pixelstore

    pixelstore Member

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    I'm sending a PHP-mail-form located on "server 1" to a receiver on "server 2"

    Server 1: cPanel webserver
    Server 2: Dovecot mailserver

    The email is received and everything on "server 2", but when I check the maillog on "server 2" I get this:
    ---
    no IP address found for host *hostname*.fastbit.se (during SMTP connection from *ipnumber*)
    ---

    fastbit.se is the internet provider at the hosting company as far as I know, and the end point when I'm running a traceroute to the IP of "server 2".

    The question is: Is this something I set in cPanel, like which server php should use or is it something wrong with my ISP?
     
    #1 pixelstore, Oct 24, 2012
    Last edited: Oct 24, 2012
  2. cPanelMichael

    cPanelMichael Forums Analyst
    Staff Member

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    Hello :)

    Please check to see which hostname is configured as the RDNS record for the IP address. EX:

    Code:
    # host IP
    Then, check to see if that hostname can be resolved from your server. EX:

    Code:
    # host hostname
    It's likely the RDNS record that is configured for the IP address does not resolve back to a valid server. To resolve this issue, the ISP should ensure the hostname resolves to a valid IP address. Otherwise, Exim will not accept the SMTP connection.

    Thank you.
     
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    #2 cPanelMichael, Oct 25, 2012
  3. wishes

    wishes Registered

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    Thank you for the answer, i have same question and i'm trying to fix it myself, i'll reviews soon !
     
    #3 wishes, Oct 25, 2012
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