10 Tools to Check Domain Blacklists (DNSBL) for Email Delivery Issues

Why is it important to check area blacklists to make sure e mail supply? Maintain studying to take a look at instruments that assist you verify DNS-based blacklists.

Are your e mail advertising and marketing campaigns changing into fruitless?

Now may be the time to verify some essential Area Title System based mostly Blackhole Lists (DNSBL).

However first let’s have a look at…

Why are domains blacklisted?

There are a number of causes that may result in a blacklist.

A few of them are:

  • Your emails have been reported as spam.
  • An ISP (or perhaps a nation) is blacklisted.
  • Your server (ISP, e-mail supplier) doesn’t have the right configuration or comprises malware.
  • Your IP tackle has been detected in a Enterprise Electronic mail Compromise assault as a result of legal habits.

These are among the commonest explanation why it’s possible you’ll find yourself on a DNS-based blacklist. Deleting the record depends upon the precise record and the rationale why you ended up there.

Relationship between area and e mail advertising and marketing

Examine this out:

Mintable NFT App Email

This e mail is from Mintable, as evidenced by the e-mail tackle: data@mintable.app.

And I’ve recognized Mintable since I created a non-fungible token with them, and this e mail comes from the guardian area–mintable.app/.

So in my proper thoughts I would not report emails from them as spam. Sure, in the event that they’re overdoing it, I might undoubtedly click on Unsubscribe. However the probabilities of them being reported as spam are excessive in the event that they ship it from one other area that I’ve no information of.

So having a separate area for e mail advertising and marketing has two sides.

The draw back is that your prospects might mark the e-mail as spam in the event that they see an unknown area. Ultimately, you lose the precise objective of e mail advertising and marketing.

The optimistic results come out if you end up a bulk shipper. Having a separate area for sending advertising and marketing emails ensures that your essential web site area stays recognized.

However when you get your recipients’ permission and comply with greatest practices, you may bypass the dreaded DNSBLs with out an additional area identify.

What’s DNSBL?

DNSBL, also referred to as DNS blacklists, is a device utilized by e mail suppliers to maintain their customers’ inboxes spam-free.

These lists are managed by exterior businesses. And you may have to request elimination if the area you are utilizing to ship emails is positioned on a site, in fact, after you repair the problem that prompted the itemizing.

It is by no means good to be on a DNSBL. They will trigger e mail supply points, reminiscent of failed supply or bounced messages.

And typically, they aren’t good to your market repute both. As well as, they alienate you out of your prospects and trigger losses.

So verify these instruments to see when you or your e mail supplier has been blacklisted.

Earlier than you proceed, be sure to know your area’s IP tackle. You’ll be able to verify your IP tackle at what’s my IP tackle. Or contact the respective assist to get the IP tackle of your e mail server.

For this demonstration, I am utilizing a publicly out there Google Workspace IP tackle.

DotCom Instruments

DotCom Instruments DNSBL Check can verify for blacklists from three totally different places with out creating an account.

dotcom dnsbl test

This utility scans these blacklists:

  • psbl.surriel.com
  • dnsbl.sorbs.web
  • bl.spamcop.web
  • zen.spamhaus.org
  • b.barracudacentral.org
  • all.spamrats.com

These have been the outcomes:

dotcom dnsbl test result

With the DotCom blacklist monitor you may arrange computerized checks. So you’ll obtain a notification in case your listed server seems in one in all these lists. You’ll be able to attempt the automated take a look at operate at no cost for 30 days.

Website Checker

Just like the earlier one, Blacklist Checker is included with all SiteChecker subscriptions.

site checker

Presently, this blacklist checker helps scanning greater than 15 blacklists.

HetrixTools Blacklist verify

The HetrixTools Blacklist Examine can decide in seconds whether or not your IP tackle is blacklisted on greater than 90 IP blacklists and whether or not your area is blacklisted on greater than 25 area blacklists.


For every blacklist discovered, a elimination hyperlink and extra info might be supplied to hurry up your elimination from the record.

Inmotion Internet hosting

Inmotion Internet hosting’s blacklist checker seems to be at an in depth database of 71 DNSBLs.

inmotion hosting blacklist checker

Admittedly, this does not have a elaborate UI and in addition lacks the auto-test characteristic.

MXToolBox: blacklists

MXToolBox’s blacklist scans about 100 DNS-based blacklists

mxtool box blacklist checker

MXToolBox has paid subscription plans for in depth blacklist testing. Even the free plan options computerized checks that take a look at from 30 blacklists every week.


SpamHaus has a transparent interface to verify for any blacklists. You’ll be able to merely put it within the search bar and click on To search for.

spamhaus blacklist check

Particularly, this isn’t a monitoring answer. Capabilities reminiscent of a subscription or computerized monitoring are subsequently lacking.

DNS verify

This Blacklist Checker device scans greater than 50 blacklists. It checks each IP and e mail blacklists.

email blacklist - DNS checker

DNS checker additionally doesn’t assist monitoring subscriptions.


Site24x7, as might be seen from the title, comes with a wholesome monitoring bundle that additionally consists of the Blacklist verify.

site 24x7: blacklist control site 24x7: blacklist check results

Presently, it searches greater than 10 blacklist databases. All its plans with a 30-day free trial and a real-time area blacklist verify.


DNSBL.data is a wonderful device that collects outcomes from almost 50 blacklists.

DNSBL info

Simply enter your IP tackle and click on Examine this IP tackle to get the output.


This DNSBL lookup device checks over 200 sources to verify your e mail advertising and marketing continues as deliberate.

multi RBL blacklist check

It’s free to make use of and there aren’t any subscription choices.


Whereas it is vitally disagreeable to see your server IP blacklisted, do not panic. Merely ship a elimination request or use a blacklist elimination service, relying on the precise blacklist, to start the elimination course of.

The elimination course of depends upon the extent of the issue, however you need to by no means repeat the issue.

On a facet be aware, take a look at these web site monitoring instruments to regulate the general efficiency of your on-line enterprise.

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