none
Disable reverse dns lookup RRS feed

  • Question

  • Some customers are complaining that they can't send any email to us, as the emails are dropped by the anti-spam, reverse dns lookup filter. I understand it's the customer's email server PTR dns problem. It's very annoying. Is it possible to disable reverse dns lookup on my exchange server? How can I do it?  Any other solutions? My exchange is 2007.

    • Edited by April Fool Friday, January 15, 2016 1:39 AM
    Friday, January 15, 2016 1:37 AM

Answers

  • Hi 

    Go to EMC, Organisation Management, Hub Transport, Anti-Spam, Sender Reputation which may be enabled. It works on the below. just disable it.

    Sender Reputation Level is based on the following information:

    HELO/EHLO analysis
    Reverse DNS lookup
    Analysis of SCL
    Sender open proxy test

    Please mark as an answer if this answers your question .

    PREM RANA

    MCSE Exchange 2013, MCSA 2012 Server MCTS Exchange 2007,

    2010, MCITP Exchange 2007, 2010 MCSE 2003 Server,

    MCSA Exchange 2003 ITIL V3 Foundation

    https://ranaprem.wordpress.com/

    This posting is provided AS IS with no warranties and confers no rights.

    Friday, January 15, 2016 3:46 AM

All replies

  • Hi 

    Go to EMC, Organisation Management, Hub Transport, Anti-Spam, Sender Reputation which may be enabled. It works on the below. just disable it.

    Sender Reputation Level is based on the following information:

    HELO/EHLO analysis
    Reverse DNS lookup
    Analysis of SCL
    Sender open proxy test

    Please mark as an answer if this answers your question .

    PREM RANA

    MCSE Exchange 2013, MCSA 2012 Server MCTS Exchange 2007,

    2010, MCITP Exchange 2007, 2010 MCSE 2003 Server,

    MCSA Exchange 2003 ITIL V3 Foundation

    https://ranaprem.wordpress.com/

    This posting is provided AS IS with no warranties and confers no rights.

    Friday, January 15, 2016 3:46 AM
  • For a problematic customer you can create an exception in antispam filter:

    Exchange 2007 Power Shell
    $WD = (Get-ContentFilterConfig).BypassedSenderDomains
    $WD.add(“*.customerdomain.tld”)
    Set-ContentFilterConfig -BypassedSenderDomains $WD

    Tuesday, January 19, 2016 4:03 PM
  • Hi,

    I am just writing to check the status of this thread. Was the information provided in previous reply helpful to you? Do you have any further questions or concerns? Please feel free to let us know.


    Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact tnmff@microsoft.com.

    Wednesday, January 27, 2016 4:00 PM