How do I change the IP Address that my Mail Server is using?

Posted on 2011-04-21
Last Modified: 2012-05-11
Long story short, a week ago our Email server was the victim of a Reverse NDR attack and it ended up getting us on some Blacklists. I've made all of the corrections and I've gotten us off all of the blacklists but we still can't email to Yahoo or anyone remotely related to Yahoo.

Would it be possible to change our IP Address so we can start sending email normally again?
Question by:Rmumpower00
    LVL 58

    Accepted Solution


    For that, you would need to update your MX records, have your PTR record updated at your ISP and reconfigure your firewall to route inbound and outbound mail to/from your Exchange Server over a different public IP.

    If you are positive your configuration issues are resolved, you would be best to simply have Yahoo! unlist from their blacklist instead. This is much easier and won't require mass DNS changes which will take time to propagate.

    demazter has a great article on having Yahoo! unlist you here:


    Author Closing Comment

    Thank you for your answer, I'll try emailing them directly instead of the online form

    Featured Post

    Hire Top Freelancers to Complete Exchange Projects

    Source the talented Expert Exchange community
    for top quality work on your Exchange projects.

    Hire the best. Collaborate easily. Get quality work.

    Join & Write a Comment

    Easy CSR creation in Exchange 2007,2010 and 2013
    Local Continuous Replication is a cost effective and quick way of backing up Exchange server data. The following article describes the steps required to configure Local Continuous Replication. Also, the article tells you how to restore from a backup…
    In this video we show how to create a Resource Mailbox in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: Navigate to the Recipients >> Resources tab.: "Recipients" is our default selection …
    In this video we show how to create an email address policy in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.:  First we need to log into the Exchange Admin Center. Navigate to the Mail Flow…

    730 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

    15 Experts available now in Live!

    Get 1:1 Help Now