Exch 2k3 - reverse DNS is set in SYS manager so why am I still getting emails that reverse DNS fails?

Posted on 2009-02-10
Last Modified: 2012-05-06
I am still getting spam even tho their reverse DNS is showing as failed in the message header.  Should I be enabling a setting that I missedt?  Thanks.
Question by:Sp0cky
    LVL 32

    Expert Comment

    You got to set it up externally.
    Ask your ISP to set it up for you. Goto and verify RDNS for your domain
    Nitin Gupta

    Author Comment

    Sorry, i was not descriptive enough.  I am getting spam.  Even tho I set reverse DNS lookup on my exchange server-  so that if reverse DNS does not resolve an incoming message will be considered spam - I am still getting spam.  I look in the message header of a spam that came thru and it says reverse DNS why didnt my exchange block it??
    LVL 32

    Accepted Solution

    Exchange on its own is not too effective in dealing with SPAM. I would suggest a third party software/
    Also use IMF:
    Let me know

    Author Closing Comment


    Featured Post

    The problems with reply email signatures

    Do you wish that you could place an email signature under a reply? Well, unfortunately, you can't. That great Exchange/Office 365 signature you've created will just appear at the bottom of an email chain. What a pain! Is there really no way to solve this? Well, there might be...

    Join & Write a Comment

    "Migrate" an SMTP relay receive connector to a new server using info from an old server.
    Easy CSR creation in Exchange 2007,2010 and 2013
    The basic steps you have just learned will be implemented in this video. The basic steps are shown to configure an Exchange DAG in a live working Exchange Server Environment and manage the same (Exchange Server 2010 Software is used in a Windows Ser…
    To add imagery to an HTML email signature, you have two options available to you. You can either add a logo/image by embedding it directly into the signature or hosting it externally and linking to it. The vast majority of email clients display l…

    734 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    19 Experts available now in Live!

    Get 1:1 Help Now