About rDNS

Discussion in 'DNS Server' started by Gloup, Oct 5, 2010.

  1. Gloup

    Gloup Guest

    Hi all,

    Sorry for my poor English.

    I do not know much about DNS and I really need the advice of experts

    I've a web server with a smtp serveur (Lumisoft) used just to send mailings
    from different web sites located on the same machine. This smtp server is
    innaccessible from outside, juste localhost is able to connect and send
    mail. No account configured.No MX record is pointing to our IP.
    Mails are sent using DNS (not with a relay).Sender's email address is
    variable (for site www.siteA.com sender adresse is and for
    site www.siteB.com sender is ).
    We do not host the DNS and we do not have the ability to configure them
    ourselves. We just asked to create a type A record www that points to our IP

    The problem: mails sent are considered as spam because we have no reverse
    DNS. Can I ask to an ISP to create a reverse DNS to our server web IP
    Is it possible for them to create a rDNS like [our ip address].in-addr.arpa
    corresponding to mail.siteA.com while we have no corresponding MX record
    that points to our IP?
    And finally, is it possible to have multiple rDNS that point to a single IP

    Thank you for your patience.

    Gloup, Oct 5, 2010
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