IP Blacklist Check - See if your server is blacklisted

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IP Blacklist Check


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About IP Blacklist Check

Due to the prevalence of spam in our online world today, there are a number of publicly available resources on the internet that list servers that have been identified as sources of spam activity. These lists, commonly referred to as blacklists, are used by many email providers to reduce the amount of spam received by their users.

If a website owner decides to send thousands of individuals emails marketing a new product, the website may find itself on a blacklist. The email service provider may add the website to a blacklist if one or more recipients mark the email as spam. In a separate scenario, if you notice that your website's traffic has ceased and frequent visitors have stopped coming, one of the causes may be that your website has been blacklisted. You should also check to see if a domain is banned if someone offers to sell it to you.

The blacklist service is offered online by several businesses. Email service providers look for a website's status on DNSBL or SURBL blacklists. These services are used by email service providers to attempt to stop spam mail before it reaches the user. Different criteria are used by certain DNSBL service providers to list and delist website addresses. DNSBL services are the first line of defence for spam filters employed by email service providers. SURBL is not the first level of spam mail protection. It is a list of websites that have been blocked because they frequently appear in spam emails. Email service providers utilise both of these techniques as their initial line of protection against spam email.

Is my server on a blacklist?

If you received a bounce back message when you attempted to send email, it may be informing you that your email was blocked due to abuse. In this context, abuse usually means the server was used to distribute spam. The bounce back message means the system has identified you as a source of spam based on one of the available blacklists.

If this is the case, you can use our Bounce back Message Parser to learn more about the error. If the email was returned due to a blacklisting issue, the tool will give you the option to notify our Systems Administration team to review the issue further. Use the Free Blacklist Lookup Tool Above to determine if your server’s IP address is found on any of the blacklists List.

If a large number of emails are returned to you, it is very likely that your domain name or your IP address has been blocked.

Blacklists are the mechanism used by ISPs (Internet Service Providers) to identify as spam, and block IP addresses and domains.

There are 3 types of blacklists:

  • private blacklists. Created by individual users or companies.
  • ISP blacklists. Internet service providers such as Gmail, Hotmail, or Yahoo have their own blacklists to prevent addresses that violate their rules from sending emails to their users.
  • public or distributed blacklists (RBL and DNSBL). They feed off user input to include and update the IP addresses and domains listed there. The ISPs, in addition to constituting their own lists, also consult these lists.

My Domain blacklisted, why?

Even if you're not a spammer - or think you aren't - you can end up blacklisted if you don't apply best practices when updating your lists and communicating with your contacts.

The points to question are generally:

  • You have purchased your contact list. Did you know that this practice, in addition to being strongly discouraged, is not legal? If you've sinned, be aware that the list you bought probably contains unconfirmed, non-existent addresses, and even spam traps.
  • You did not ask for confirmation. If you haven't used the double-confirm method to get your contacts, your list may contain incorrect or non-existent addresses (if the user made a typo when entering their email address, for example), registered by third parties, or even people who don't remember signing up ... all this affects not only your deliverability but also your reputation.
  • Unauthorized uses. You use contacts who have given you their permission to receive other types of communications when you were at another business or advertising another product or service.
  • Bad practices. Are you completely courteous (and honest) to your subscribers, and those who no longer want to continue receiving your communications? This is not the case if:
    • you continue to send emails to contacts who have unsubscribed.
    • you send emails to your customers too frequently.
    • the subject line of your message is likely to be considered spam.
    • your emails are irrelevant. Remember that quality content is the key to your success.
  • IP. You have the same IP address as a spammer, or your IP address is in a range of IP addresses considered spam.
  • Collateral damages. If you use your own mail server without having the proper security mechanisms in place, a malicious user could use your mail server to send spam to thousands of users, thereby causing your IP or domain are blacklisted.
  • Spam reports. There are different mechanisms available to users to report spam. You can get blacklisted if customers have flagged your emails as spam. There is also the (unlikely) possibility that a competitor has indicated that you are sending spam (but you should first eliminate all the previous assumptions before you cry conspiracy).

IP Blacklist Check

How do I know if my domain blacklisted?

There are several free Blacklist Lookup tools that allow you to check if you are blacklisted or not. A simpler way to check if a website exists on any blacklisted websites lists is to go to SeoEnabler.com and scroll to the ‘blacklist lookup’ icon. You must know the IP address of your domain. Enter the Domain Name and run the check. This tool only checks if your website is on DNSBL list.

To check if your website is on any other website you can use other tools that are available on the internet.

How to get out of a blacklist?

Each blacklist has its own procedure to request to be removed from its database of malicious domains or IPs. Some offer a form on their website, and for others you need to send an email with a specific subject and content. If you have the problem with an ISP, the principle is basically the same: everyone has their own procedure and you have to get in touch with them individually.

How to avoid falling back into a blacklist in the future?

No system can guarantee you 100% that you will no longer appear on a blacklist, some lists are extremely strict and only one spam report is enough for them to include you. However, if you follow these few tips, you will avoid getting caught by most of them:

  1. Never buy contact lists.
  2. Use double-confirmation forms to gain new subscribers.
  3. Never add an email address without the owner's consent.
  4. Offer your users simple mechanisms to unsubscribe or update their data.
  5. Identify yourself in front of your subscribers. Include your contact information, avoid addresses such as "do not reply" and choose an easily recognizable sender name such as the name of your business or department.
  6. Don't keep sending emails to people who have unsubscribed.
  7. Don't send emails too frequently.
  8. Give your message a good subject line. Avoid all caps, exclamation marks, and words that may be considered spam.
  9. Never send emails with irrelevant content.
  10. If you are using your own mail server, use a dedicated IP address, make sure it does not allow relaying and that all security mechanisms are in place to prevent misuse by malicious users.

Finally, check periodically if your IP address or domain name is blacklisted and if so, take the necessary steps to get out of it.

Search engines blacklist Tool

Nobody wants their genuine website to be on a search engine's blacklist. Any website that is on a search engine's blacklist will no longer be accessible over the internet. For various reasons, search engines block some websites. A website will be banned if it is engaged in spamming.

A website will be banned if it is thought to be used to hack into other websites. A website will be banned if it contains connections to dubious sources. These are only a few of the causes for blacklisting websites. Keep in mind that search engines analyse each website's contents and links; if they discover any suspicious behaviour or poor links, they will blacklist the website. A website that has been blacklisted by a search engine just vanishes from the internet. The IP address is used by search engines to ban a website. The result is that all websites utilising that IP address will no longer be accessible on the internet if your website uses a dynamic IP address and a search engine blacklists that IP address.

Using blacklist Check / lookup Tool

Visit CyberTools and scroll to the "blacklist lookup" icon for a quicker approach to see if a website is included in any lists of blacklisted websites. Alternatively, you may put smallseotools.com/blacklist-lookup into a search browser tab. You need to be aware of your domain's IP address. Run the check after entering the IP address. This tool solely determines whether your website is listed on the DNSBL.

You can utilise other online tools to see if your website appears on any other websites.

We have outlined the causes of website blacklisting. We've also shown you a useful tool you may use to see if your website is on a blacklist. You must take the necessary precautions to safeguard your website against hackers, spyware, and viruses. A few tools are available to safeguard your website.