How to Remove Your IP from Yahoo Blacklist

We do not provide desktop support. If you have a personal account with an email issue, call your ISP. We cannot assist unless you have a Linux server with root level access. We have no formal affiliation with Yahoo!.

This is another installment of our Spam Blacklist Removal Series, so be sure to check out the series for other ISPs. For Yahoo blacklist problems, read on.

So you fire up your favorite mail client (mine’s Thunderbird) only to find upset customers and bounced emails. Appears, your server is on the email blacklist. You see tons of messages with an error:

421 4.7.0 [TS01] Messages from <> temporarily deferred due to user complaints -
<> ; see

So what now? Your server has been blacklisted by Yahoo!. The email queues are building up, clients are calling, and you cannot forward that latest NSFW video to your friends on Yahoo!.

To get removed from Yahoo!‘s blacklist, you need to follow some simple steps:

  1. Find the cause
  2. Fix the problem
  3. Wait …
  4. Fill out the form
  5. Wait …

If you are a spammer (and you know if you are), then don’t wast your time with these tips. They will not help you get removed from the email blacklist.

If your wearing a white hat happened to get nailed by the blacklist, read on.


Yahoo Blacklist Delisting Steps

The first step is to find the cause. Email service providers are increasingly relying on sender reputation metrics to determine if email is spam or should be flagged for additional processing. Yahoo! works with ReturnPath for this feature. If you consistently trigger Yahoo!‘s blacklist, you may find that you get permanently blocked or your email is routed to the junk folder.

Yahoo! did not blacklist your server to spite you. Something triggered the listing. To prevent future listings, you must identify the trigger. If you get re-listed, your sender reputation will drop, and as a result, email will be even more difficult to delivery successfully.

In my experience, if you run normally clean email operations and follow these steps, your Yahoo! email delivery problems will reside within 48 hours or less.

Some key reasons for getting blacklisted:

  • Compromised Web Script
  • Compromised End-User Account
  • Legitimate Bulk Emailing
  • Forwarded Email

If you have a client forwarding large volumes of email to Yahoo! and the client flags these forwarded messages as spam, you could get put on the Yahoo blacklist. The reason is it is impossible for the filtering to determine if the forwarding was intentional or a trick used by the spammers. As a result, spam filters often hold the last and first links in the delivery chain responsible.

Historically, open relays have been prone to blacklisting, but recent versions of hosting control panels and email software often disables relaying by default. We encourage the use of SMTP AUTH on all servers to prevent unauthorized mail relay.

Yahoo Blacklist Postmaster

All major ISPs, Yahoo! included, maintain very useful Postmaster help pages. These pages often detail the do’s and don’ts for sending to their email servers. Yahoo!‘s Postmaster help center provides a variety of topics. When you get a chance, I recommend you review their best practices area and assure your email policies are in check with what they recommend.

Yahoo Blacklist Removal Form

In my work providing server management services, I’ve learned you have to be diligent and patient when trying to get your IP removed. There is not need to send the ISP’s multiple emails. Just follow their process and results should follow.

First, Yahoo uses SpamHaus.   Make sure you are not listed there.  If you are then you need to request de-listing from Spamhaus first.


Once that is done, you can fill out the Yahoo! Bulk Sender Form.

Do not try to get removed from the blacklist if you have not found the source of the problem. You don’t want cycles of delisting and re-listing to damage your sender reputation. If you have found the problem, then simple wait. In many cases, I find that the block is removed in under 48 hours.

If you are still blocked after 48 hours (or impatient), you can then submit Yahoo!‘s Mail Delivery Issues Form. Before submitting, be sure you are abiding by Yahoo!‘s email policies. Also, verify that all of your DNS setting are correct. Reverse DNS (PTR), MX, A, and SPF records should all be checked If you are using DomainKeys, be sure to test that those are working as they should. The key is not to raise any red flags during the review process. Make the reviewers job easy by fixing problems first.

Though some fields on the delivery report are optional, it is best to provide as much information as possible. Especially, the “Enter additional information here:”. You will want to detail in 2-3 sentences your remediation efforts. For example, if the problem was a compromised web script send them a note:

We have identified an insecure web application on our server that permitted unauthorized email relay through our system. We have removed this script.

Keep it short and technical. Yahoo! postmaster staff reviews 1000’s of these requests, so being short and to the point is best to get removed from the Yahoo blacklist.

In the next couple of weeks, I will be providing quick how-to’s for getting out of the blacklists maintained by Google, MSN, Earthlink and Frontbridge. Also, if you send large volumes of email or are an email service provider, don’t forget about email feedback loops. Yahoo! now provides a Compliant Feedback Loop based on DomainKeys.

Lastly, if you find all of this too much to deal with, then consider our Linux support services. While we cannot guarantee removal from the yahoo blacklist, we are pretty successful (provided, of course, that you are not a spammer).

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Jeff is the CEO and founder of rackAID. He has been working in hosting industry since the days of Rackshack's famed customer appreciation parties back in the early 2000's. Jeff is an avid cyclist, wine enthusiast, and admitted Kraftwerk listener (please don't hold that against him). You may spot him at any number of hosting, startup and small business conferences


  • Jason Bradbury December 2, 2009 at 11:15 am

    Just thought I’d post a link to a spam blacklist tool I use to check the lists in real-time…
    <a href=“; rel=“nofollow” target=“_new”></a&gt;

  • Jeffrey Huckaby December 4, 2009 at 12:10 pm

    We also use to check for blacklists.  Unfortunately, many ISPs do not publish their blacklist.  So we do a manual telnet session to port 25 at the ISP. If you are blocked,  you will often get an error indicating what actions to take.

  • Jeffrey Huckaby December 4, 2009 at 12:19 pm

    Also on most servers, the IP you need to check is the main server’s address not the sites IP address.

  • ServerPars August 17, 2010 at 12:59 pm

    I think the best way to know our Ip status is <a href=“; rel=“nofollow” target=“_new”></a&gt; .with this tool you can know any thing about your ip and ways to resolves problems if exist.

  • Jules September 18, 2010 at 11:34 am

    Do you have any suggestions re. mail forwarding?  Yahoo regularly blacklists our server address because of spam we are legitimately forwarding on behalf of clients who have requested we forward email for them to yahoo (or BT Internet) accounts.  Is there any way of preventing this from happening, or do I simply have to carry on going through the cycle of: wait for the clients to start complaining, contact yahoo and ask to be removed from the blacklist, wait a week or so, check our messages aren’t being discarded still, then contact our clients and let them know the problem is resolved?  This really doesn’t seem to be a tenable situation, but I just don’t see what else (other than recommend our clients do not use BT/Yahoo) we can do?

  • Jeff H. September 18, 2010 at 4:26 am

    Great question, one that I think deserves its own blog post, but until then here is the problem faced by the ISPs.

    When you forward email to them, they have no way of knowing if it is good email or spam.  If they just accepted forwards without any checks, spammers would immediately take advantage of this tactic. 

    There are couple of tips which I will expand on in the blog post (hopefully this week):

    1. Scan for spam before you forward.  With good spam filtering, you can send less email to Yahoo! and similar ISPs.

    2. See if the ISP has a way to pull in the email via POP3.  For example, I know you can check 3rd party accounts with AOL’s webmail tool. Yahoo may offer something similar.

    I suggest you check back this week and I will try to get a post up on this topic as it impacts many of our clients.

  • canan November 23, 2010 at 1:17 am

    When I sent an official count meil is perceived as spam, please correct it

  • Agus Setiawan February 1, 2011 at 11:20 am

    good spam remover info. spam is very bad thing. and i dont want spam come into my life … hikss

  • felt March 14, 2011 at 11:46 am

    is there any webpage to directly verify the websites , how to instantly check it

  • Jeffrey Huckaby April 28, 2011 at 11:18 am

    You may want to check into using a service like SendGrid.  I recommend that you do not do bulk emailing on a server that is used for transactional purposes (sending receipts, etc) or used internally for email.  When you first start sending large amounts of email, you have a good chance of getting blocked.

  • Nausherwan April 28, 2011 at 12:03 pm

    Hi, i want to send bulk emails as a requirement of my company new products, i have several addresses of yahoo and hotmail to send bulk mails, which method should i adopt to send bulk emails, i dont want that my IP address should be blacklisted, as i have to do this exercise after every 2months.
    Please comment, i need it asap.

  • Nausherwan April 28, 2011 at 11:50 am

    Thanks jeff for your input, i actually want to know backend functionality of bulk emails, when i send bulk emails, how my ip will b blocked in different RBL’s, and how different companies allow bulk emails, bcz if they allow bulk mail,than their own ip will b blocked. How these companies work actually

  • Jeffrey Huckaby June 13, 2011 at 10:31 am

    @Nausherwan How blacklists work is really beyond this blog post but in general they look at how often your IP sends spam.

    This is not uncommon.  Unless you are in a really bad network range, you should be able to recover the IP’s sending reputation.  You can check reputation here:
    If you have good reputation score and proper DNS/DKIM/SPF, then open a ticket at Yahoo.  Note that the tips in this blog are for true blacklisting not email going to the junk folder.  Keeping email out of the junk folder is a much harder task.

  • Richard June 13, 2011 at 6:55 am

    I rented a new server with an already banned IP address. Changed the Ip and it was also banned. My host said they can’t endlessly provide me with new IP addresses. I have been trying for over 6 months to get Yahoo to unban me to no avail. I get some really weird responses – there’s no continuity in discussions. I have implemented spf and DKIM stuff. Everything.
    O, and I don’t send bulk emails. Only transactional stuff. I’d be lucky to send 50 emails per day, of wich maybe 2 (if that) go to Yahoo addresses.
    Still, what to do? The best I have come up with is to recommend my clients drop Yahoo mail and sign up with Gmail instead :o)

  • steven July 28, 2011 at 3:02 am

    @Jeff H. Please guide me how to improve that Yahoo sender IP reputation.

    I was ticket Yahoo ask for help, but they keep pasting me the customer care template.


  • Connie January 11, 2012 at 1:51 am

    YAHOO! – wow. I must say, I see this thread and am not consoled.
    The endless customer care loop that begs me to resubmit if I change my policy. So I submit updates to the smtp policy and get placed on a 6 month hold.
    Does it ever end with them?

  • Hesham March 5, 2012 at 1:33 am

    Please remove my IP “”
    and my domain “” from Gmail blacklist.

  • Nguyen Tai Tuyen April 2, 2012 at 4:58 am

    Please remove my IP “”
    and my domain “” from Gmail blacklist.

  • NDIAYE April 3, 2012 at 10:34 am

    please remove my IP “”

  • Vivek April 9, 2012 at 1:23 am

    please remove my ip from yahoo or please help me to remove.