Bussiness 17 December, 2023

There are more than a hundred spam blacklists . Most blacklists track the reputation of the sending mail server and the sending domain name.

In this article, we will show you how to check if your email address is on a spam blacklist and we will also discuss what you can do if your email address email has been blacklisted.

Types of blacklists

There are 3 main categories of blacklists:

1. Enterprise Spam Firewalls: These are blacklists and firewalls that are primarily used and maintained by corporate IT departments. Examples include companies such as McAfee and Barracuda.

2. Private blacklists: These are the internal blacklists maintained by most major ISPs. For example, Gmail uses its own internal blacklists for its spam filtering technology. The email filter from Microsoft is also kept private.

3. Public blacklist: These are blacklists that are publicly available and can be queried directly.

Checking your email address against public blacklists

Because public blacklists are available to the public, this should be the starting point for checking if your email address has been blacklisted.

There are over 120 notable public blacklists, and being included on just a few of them is enough to cause email delivery problems. Fortunately, there are free tools and websites you can use.

• MX Toolbox
< li style="box-sizing: border-box;">Valli.org
• DNS Stuff
• DNSBL

Checking email header for “undeliverable” error messages

When you send an email and it is blocked, you will receive an "undeliverable" error message. Check the email header of the message and look for clues and codes that look like the following:< /h4>

550 service unavailable; client host [xx.xx.xx.xx] blocked using Blocklist, IP mail banned by xx.xx.com

553 your IP (xx.xx.xx.xx) is on our block list.

How did I get on an email blacklist?

There are a few ways you can end up on an email blacklist.

1. Monthly email newsletters are being sent to a large number of recipients (500 or more per month) from an unmanaged mailing list. By unmanaged, we mean that you are not fulfilling requests unsubscribe for users who wish to opt out of receiving your newsletter.

2. You have an easy-to-guess email password and your account has been hacked by spammers.

3. < h4 style="box-sizing: border-box; clear: both; font-family: Raleway, sans-serif; color: #202020; font-weight: 500;">Someone is spoofing your email address. Are you receiving bounce messages for emails you didn&;#39;t send? Someone could be using your email address as the "from" address when sending unsent email. desired in bulk.

Just a couple of “report as spam” clicks and your email address will end up on a blacklist.

How to remove my domain name from a blacklist?

Most blacklisting databases will also provide reasons for doing so, so you should be able to find out why you were blacklisted.

If you discovered that your domain name has been blacklisted, please contact bastify so we can start an investigation and try reverting it.

Tips to keep in mind:

• Scan your computers and devices for viruses

• Make sure you have all updates and patches for your operating system

• You may also want to change or apply stronger passwords for your email accounts

• If you maintain a mailing list, make sure you have resolved all “unsubscribe” and “opt-out” requests quickly

• If you send monthly newsletters, be sure to include the “unsubscribe” option in your newsletters for users who wish to opt out