Ip reputation vs domain reputation.
Domain Reputation Check.
Ip reputation vs domain reputation marketing) of a sender's emails and is therefore what Inbox Providers reference when looking at a domain’s sending reputation. Mar 11, 2025 · Factors that affect your domain reputation. Domain Reputation. As discussed, domain reputation measures a website’s Two of the biggest factors connected to your reputation as an email sender are IP and domain reputation. If you're concerned about an IP address, this tool can help you find out if it is malicious. Domain Reputation の抄訳です。 メールの到達率は、以下のような多くの要因によって決まります。 送信者認証がされているか; 宛先リストがクリーンに保たれているか; 受信者に望まれるコンテンツを送っているか Oct 11, 2024 · So domain reputation refers to “who” is sending the emails and IP reputation refers to “where” the emails are being sent from. A good reputation of the domain increases the deliverability of emails to inboxes. You can configure firewall policies to filter traffic according to the desired reputation level. Unlike your IP reputation, your domain reputation reflects the health of your brand’s email sending domain. Oct 10, 2024 · The IP reputation, domain reputation, recipient positive and negative engagements are just a few of the factors that influence your overall deliverability. IP and domain warm-up helps you build a solid sender reputation and win over ISPs by progressively increasing the volume of emails you send. e. Google Postmaster Tools Google offers their Postmaster Tools to senders allowing you to track data on your high volume sending into Gmail. Domain reputation vs IP reputation IP Reputation Check. About Proofpoint ® Dynamic Reputation (PDR) Dynamic Reputation leverages Proofpoint's machine-learning driven content classification system to determine which IPs may be compromised to send spam (i. Email firms keep a close eye on these addresses Oct 21, 2014 · Each provides a different approach in developing an IP reputation. IP-Reputation. Mar 28, 2024 · Domain Reputation. can I trust this operator to host my domain? Investigating - e. May 14, 2024 · An image can effectively highlight the difference between IP reputation and domain reputation: “IP reputation and domain reputation are complementary metrics that collectively contribute to email deliverability and sender reputation management. Sowohl die Domain-Reputation als auch die IP-Reputation sind für die Online-Sicherheit von entscheidender Bedeutung. While both are important, they’re different concepts. This shows that the ISPs filtration will take the brands into consideration. Tied to a particular server address, IP reputation uses the address as a unique identifier to determine whether a sender is trustworthy. Blacklisting. They decide if your emails reach the inbox or go to spam. Products Email API. Jan 1, 2024 · Email Sending Reputation 101: IP Reputation vs. Differences Between Domain & IP Warmup. Mar 19, 2024 · The higher the quality of emails sent, the better the reputation. Mar 23, 2022 · Domain-Reputation vs. ” False—scores update dynamically based on new behavior. Domain reputation: Domain reputation, on the other hand, is all about the reputation of the domain name used in your email address or in the links within your email. Every email is sent from an IP address. Domain reputation helps users determine whether or not a website is safe to visit. Domain Reputation IP Reputation. But the more they share how they evaluate the goodness and badness of domains, the more the hackers will exploit the data to bypass cybersecurity checks. IP reputation vs. IP reputation determines the quality of the company’s IP address. What is the difference between Domain Reputation vs IP Reputation? By understanding the distinction between IP and domain sending reputations, you can improve email deliverability. Aber was sind die Hauptunterschiede? Schauen wir uns eine Tabelle an, um die Dinge zu verdeutlichen: Aug 2, 2023 · Reputation Evaluation: Talos assesses the reputation of your domain or IP as Good, Neutral, or Poor based on evaluations by other email service providers. Several other factors influence IP reputation, such as the location of the IP address IP and Domain Reputation. Find more details on maintaining your domain reputation here. If you have a new sending identity, whether it’s a new sending domain or IP you must warm them up before sending. It affects email deliverability since providers may decide that your domain belongs in the spam folder as opposed to the recipient’s inbox. It’s a unique identifier assigned to your computer or server. Mar 17, 2025 · IP reputation reflects the trustworthiness of the specific IP address used to send emails; a history of sending spam or engaging in malicious activities can damage its reputation, potentially leading to emails landing in spam or the IP being blacklisted. If you have a new IP address, your reputation is scrutinized because you don’t have an established sending history. An IP reputation is linked to the device used for transmission, while a domain reputation is connected to sender identity. Connect accurate domain analysis directly to your backend and business logic. However, IP reputation is also impacted by if you’re using a new IP address and/or a shared IP. It also provides details on the history, activation and associations of your domain. But getting high deliverability rates depends on understanding why your emails are ‘spammy’. Domain reputation vs IP reputation . IP: Physical server address sending your Sep 18, 2023 · Domain reputation: The reputation associated with your domain name (like hunter. Your email reputation is composed of two key elements—your IP reputation and your domain reputation. Some ISPs rely more on the IP reputation, while others rely more on the domain, they are shifting more to the domain though, because it is harder to change the domain due to all the data that needs to be moved. And once your domain reputation is low, having a high IP reputation won’t be of much help. Nov 29, 2017 · Monitor IP address blacklists and IP/domain reputation # Starting with the very simple, make sure that your domains and IPs (or your ESP's IPs) haven't ended up on a spam blacklist. IP reputation shows how trustworthy emails originating from a specific IP are based on the historical sending behavior associated with that specific IP. Together they make up the email sender reputation. com) associated with your emails. Since you could have hundreds of different domains sending on the same IP, domain reputation is more pointed than IP reputation. Something worth remembering: Apr 11, 2024 · この記事は Email Sending Reputation 101: IP Reputation vs. IP Reputation. IP reputation refers to the perceived trustworthiness of the IP address you use for sending emails. The higher your reputation, the more mail is landing in Gmail inboxes. Others include sender authentication, keeping clean email lists, sending wanted content, having a good sending reputation, and much more. Domain Reputation vs. IP Reputation vs. However, some email providers like Gmail assess domain reputation in combination with IP address reputation, so you should still keep an eye on both. IP reputation refers to the computer that sends your emails. The helpful data they provide includes IP reputation, domain reputation, Gmail delivery errors and more. Domain reputation. Spam complaints and sending emails to invalid addresses harm your site’s reputation as well. Each unique domain has its own reputation. Mar 31, 2025 · An IP reputation check can tell you clearly that your emails are at risk of being flagged as spam. IP Reputation, crucial for accessing the recipient server, is determined by the origin of email messages. The differences between them are primarily in the scope. Several factors may cause a poor domain reputation. If you want to maximize deliverability, you have to pay attention to all of the following: IP and domain reputation; List hygiene; IP warm-up Email inboxing is relying more and more on both the domain reputation and the IP reputation. Blacklisted IP Reputation. A free online IP risk score and IP proxy detection tool you can use to get reputation of an IP address. Check if an IPv4 or IPv6 address is blacklisted with this online IP reputation check tool. Sender score and domain reputation affect each other in a loop where good or bad practices in one influence the other. Domain 2 days ago · IP & Domain Reputation Overview; Email & Spam Trends; Threat Data Overview. An IP address is a number that identifies computers on the internet. IP/Domain Reputation Checker tool is a free online service that evaluates the reputation of an IP address or domain name. Metrics : IP reputation is often gauged by factors like email bounce rates and spam complaints, whereas domain reputation considers additional elements like domain age, user engagement, and content Nov 15, 2023 · If an IP address is consistently used to send good quality content that recipients engage with, its reputation increases. Feb 17, 2012 · Domain reputation and IP reputation are just a few of the considerations that are used to determine your overall Sender Score. Simply put, IP reputation represents "where" the email is coming from, and domain reputation represents "who" the email is coming from. IP/Domain reputation checks can help understand how different mailbox providers perceive your domain. This type reflects IP addresses that are known for malicious activities such as spamming or hacking. There are two main types of reputation that mailbox providers (MBPs) use to determine whether your emails make it to the inbox: IP reputation and domain reputation. Organizations use blacklists from reliable sources to block these addresses and prevent suspicious interactions. May 20, 2024 · Die Domain- oder IP-Reputation ist Ihr E-Mail-Absenderwert. Jul 16, 2019 · Things like domain age, how the domain identifies across the web, and whether it identifies in the entertainment, advertising, finance, or education industries can all impact your domain reputation. While both are important for deliverability, there are some key differences: IP reputation is specific to one IP address as a consequence of the emails sent from the IP. Microsoft SNDS. Jul 31, 2023 · IP warm-up vs. Last updated: April 06, 2025 15:04 GMT Top Email Senders by Country in the Last Day. It reveals your IP address reputation, domain reputation, encryption usage, email authentication success and failure rates, and spam rates. Domain Reputation appeared first on SendGrid. IP reputation filtering. Additionally, be mindful of the quality of your domain name, as it also contributes to your overall reputation. In general, your domain reputation reflects the history of your organization’s digital trustworthiness. If IP reputation is a science, domain reputation is an art (tempered with scientific aspects). Unlike IP addresses, which can be changed relatively easily, a domain sticks with the sender—which is why receivers have been placing far more emphasis on domain reputation to Jan 13, 2025 · Google Postmaster Tools is a popular suite that shows how Google views your IP reputation. But what’s the difference between IP reputation vs d Feb 12, 2024 · The sending domain (mailed-by) is typically what remains consistent across a category (transactional vs. ’ It’s linked to your Learn the difference between IP reputation and domain reputation, and how each affects your overall email reputation. Domain Reputation: Unlike IP reputation, which is about the ‘where,’ domain reputation is about the ‘who. Your IP address works a bit like an address that other computers use to find your 4 days ago · Domain and IP reputation, though different, make up your sender reputation. IP reputation has a negative impact when your email messages are classified as spam. IP reputation helps users determine whether or not the traffic coming from a website is secure. Stay Out of Trouble With EasyDMARC’s IP/Domain Reputation Checker. Jan 23, 2023 · Learn the difference between IP reputation and domain reputation, and how each affects your overall email reputation. We do this together with a like-minded community. There are a few misunderstandings about IP reputation systems: “A bad IP reputation means hacking is involved. This means vast amounts of IP activity, with huge volumes of rich data output. IP Warm-Up: Focuses on building the reputation of the IP address you send emails from. Your domain and IP addresses have their own reputation with all ISPs like Yahoo and Google. While domain reputation signals “who” sent a message, IP reputation signals “where” a message came from. Here’s how they differ: IP address. Through rigorous analysis, our researchers provide unbiased intelligence on the complex nature of IP reputation. Jan 25, 2024 · IP reputation vs domain reputation . How can domain reputation data be utilized? Reporting - e. Feb 21, 2023 · Sender reputation compares the domain name that's returned by DNS to the domain name that the sender submitted in the HELO/EHLO SMTP command. Mar 17, 2025 · This means even if you have a good sender score, your emails can land in the spam folder if you are using an IP address with a bad reputation or sharing an IP address with a bad sender. Enter a URL or IP address to view threat, content and reputation analysis. Both are critical for email delivery. Email IP reputation indicates how trustworthy your IP address is in the eyes of email service providers. Sep 21, 2022 · IP reputation looks at where a message was sent from, i. When we talk about domain warm-up or a domain's reputation, we are talking about this sending domain. This article will briefly look at the differences between the two types, how email domain reputation is calculated, and go through the top 10 tools to check email IP and domain Reputation to assist you in finding the best one for your needs. Die IP-Reputation hilft den Nutzern festzustellen, ob der von einer Website Sep 15, 2022 · Domain reputation looks at who sent a message; IP reputation looks at where the message was sent from, i. However, domain reputation isn’t the only email reputation that mailbox providers consider. Along with being an accumulative and ever-changing score, email reputation consists of IP reputation and domain reputation influenced by their specific criteria. Generally there is an underlying issue that should needs to be resolved before making a change. It factors in not only your IP address but also the domain attached to your email sending behavior. Common Misconceptions About IP Reputation. Oct 19, 2022 · You have a particularly large influence on your domain reputation. While the IP reputation can be reset with a new IP address, the domain reputation stays with you even when you change a device. domain reputation. Nov 13, 2024 · IP and Domain Reputation: Why You Must Care. the device or server corresponding to a specific IP address; domain reputation looks at who sent a message. May 20, 2024 · Top 5 Domain Reputation Checker Tools. Domain and IP reputation are closely tied together when it comes to email deliverability. Built with our IP Reputation API. Good Reputation: A Good reputation means there are no concerns, and your emails are likely to reach the intended recipients’ inboxes without issues. The composite score of email is primarily determined by two key components: IP reputation and domain reputation. IP address reputation and email domain reputation are the two primary criteria that ISPs employ to assess email reputation. source: Storyset. Jan 15, 2025 · Defender TI's reputation score, classification, rules, and description of rules can be used to quickly assess if an IP address or domain indicator is good, suspicious, or malicious. IP Reputation vs Email Domain Reputation. domain warm-up. IP reputation is based on the IP address (a unique string of characters identifying a computer over the internet) from which the email originates. Mar 28, 2025 · 2. Conversely, sending spam or getting blacklisted can tarnish the IP’s reputation. In this case, the IP reputation could be affected by another sender engaging in spamming or other poor email Mar 23, 2024 · Check out our domain health checker. It is important for senders that are monitoring this metric to understand if the IP addresses listed in GPT are dedicated or shared IP addresses. However, there are some key differences between warming up a domain vs an IP address: Domain: Tied to custom email address/hostname. co Oct 21, 2022 · Find more details on maintaining your domain reputation here. The web host’s credibility and operational integrity reflect directly on the domain names under its umbrella. In this way you can control your IP reputation as you are not one among the hundred. To manage IP and domain reputation effectively, ESPs should follow these key principles: 1 - Invest in experts. io), IP reputation: The reputation of the server (IP) used to send your emails (if you’re using an ESP like Gmail or Outlook, these services handle the IP). 2. Providers want to protect customers from spammy or malicious content, and use IPs to determine the quality of a sending environment and make assumptions about the quality of a Feb 22, 2024 · Domain reputation (also called IP or sender reputation) concerns the health and legitimacy of your email domain, and is determined by internet service providers (ISP) and mailbox providers. Mar 6, 2025 · 9. IP reputation assesses the sending behavior and history of an IP address, including factors like spam complaints and sending volume. part of a botnet). Mar 24, 2025 · When looking into email address reputation, you'll often come across terms like IP reputation and domain reputation. can I trust this domain on my network? May 29, 2024 · IP and domain reputation best practices. Scope: IP reputation focuses on the reputation of a specific IP address, while domain reputation covers the entire domain, including subdomains. Because many people and businesses send messages using Gmail, it is one of the top tools to identify reputation issues. While domain reputation looks at who sent an email, IP reputation is concerned with where the email was sent from. Jan 21, 2025 · IP reputation is related to the specific IP address from which emails are sent, whereas domain reputation is tied to the email domain itself. By using AllClients CRM, you have a team dedicated to managing your sending IP address, which means we’re upholding the highest IP reputation for your senders and you won’t need to worry about that. ESPs use this score — and other factors, like email content — to decide whether to place your email in the primary inbox or spam folder. Both are critical for email deliverability. There’s a common misconception about email reputation – domain reputation and IP reputation. So far TheHive seems more immediately practical since we don’t necessarily have a centralized place for documenting any research or response actions (currently using some random combination of an Excel spreadhseet and LanDesk, which we are replacing next year). Better don’t presume domain reputation as the only email reputation a mailbox provider considers. The foundation of sender reputation involves your sending domains and the IP addresses from which emails are sent. They need to understand the entire ecosystem. Mar 15, 2024 · IP reputation, like domain reputation will help provide insights regarding the success of your messages. IP vs. Unveiling the Influence of Web Hosting and IP Address on Domain Reputation. Dec 16, 2024 · Domain reputation vs. View a summary of URL data including category, reputation score and influences, and basic WhoIs information. View a summary of IP address data including threat status and analysis, geographic location, and virtually hosted domains on the IP address. By being aware of what is evaluated to calculate the IP and domain reputation score, you can pinpoint the factors affecting the reputation of either and address them. IP Reputation vs Domain Reputation May 20, 2024 · Top 5 Domain Reputation Checker Tools. Domain Reputation Print 1 Email deliverability is influenced by a lot of factors, including signing your mail, keeping clean lists, sending wanted content, having a good sending reputation, and much more. Jan 26, 2024 · While talking about domain reputation, we refer to all the domains that are associated with your domain name. Together, these factors influence how mailbox providers assess your emails. 5. The higher your sender reputation, the more likely your emails are to land in the primary inbox of your Jan 18, 2025 · Talos Intelligence, a robust IP and domain reputation tool by Cisco, is one of the most comprehensive third party softwares for monitoring your email reputation, sender score, domain reputation, and IP reputation. 4. Some major contributors are: 1. To determine the IP reputation score, ISPs check the reliability of the sender’s IP address. It searches the given domain or IP in the most popular blacklists and informs if the source is listed there. Jul 12, 2023 · As your IP reputation is just one of many data points MBPs consider when assigning you a sender reputation score, it’s also critical to monitor and improve your domain reputation. Jan 2, 2025 · Your sender reputation includes your email domain reputation and your IP reputation. It’s important for Internet users to understand that all online behavior affects domain reputation. Email domain reputation vs IP reputation. IP/Domain blacklists contain addresses E-Mail-Domain-Reputation vs. IP reputation Domain reputation is a score an email service provider (ESP) generates based on how recipients have previously engaged with your email domain. Other times, we might not observe enough infrastructure associated with an IP address or domain to infer if the indicator is good or bad. Domain reputation is also closely related to your sender reputation. Your email reputation is an indication of inbox potential – not your inbox delivery rate – and it is only one of many data points you need to determine how mailbox providers may be filtering, blocking, or delivering your email to inboxes. Dec 4, 2024 · IP reputation and domain reputation. This score is like a trust meter in the eyes of Internet Service Providers and email services. Both domain reputation and IP reputation are essential for online security. Domain reputation is a newer assessment technology. Mar 23, 2022 · Domain Reputation vs. Don’t assume that a new IP address will fix a damaged domain reputation. Now that we know a little more about how your Sender Score is determined, let's learn how to check your score. The purpose of IP reputation is to delay or block IPs identified as being part of a botnet or under the control of spammers. It is a numerical measure of the trustworthiness of an IP address. g. I recently spun up TheHive/Cortex/MISP as well as IntelOwl to see which suits my team’s needs better. To better understand email sender reputation, it is essential to consider two factors: IP and domain reputation. This reputation also factors in key metrics such as bounces, complaints, opens, and spam traps. This intelligence enables us to shine a light on malicious activity, educate and support those who want to change for the better and hold those who don't to account. IP reputation and domain reputation comprise the email sender reputation. Consider it your home address for emails. IP Address Domain Reputation Check. Discover how mailbox providers prioritize sender reputation. Just like domain reputation, your IP reputation plays a crucial role in determining whether emails sent from your IP address will reach recipients’ inboxes or get flagged as spam. This service is built with Domain Reputation API by APIVoid. May 7, 2024 · Email Domain Reputation vs. Sie entscheiden, ob Ihre E-Mails den Posteingang erreichen oder im Spam landen. IP and domain reputation are similar concepts, but they aren’t the same. So, decisions concerning your email sending infrastructure can impact deliverability. Feb 15, 2024 · Domain reputation vs IP reputation. In Comparing domain reputation to IP reputation, you can observe that IP reputation pertains to the assessment of the credibility of devices assigned to a specific IP address. ” Not necessarily—shared IPs can get flagged due to others’ activities. See full list on allegrow. Good Reputation: A Good reputation means 5 days ago · Spamhaus Project is the authority on IP and domain reputation. These could be subdomains or aliases, return-path addresses, DKIM signatures, or links and headers included in your emails. A domain’s reputation can be influenced by the behavior of the IP addresses it sends emails from. They also assign a reputation to your sending IP address. What impact do IP addresses and domain reputation have on each other, and how can they affect your email marketing efforts? IP addresses and domain reputation are closely linked in affecting email marketing efforts. However, a strong domain reputation can mitigate this by allowing you to switch to another Dec 5, 2023 · IP Reputation vs. Aug 21, 2024 · The domain reputation along with the IP address reputation (the condition of the IP address) make up the sender’s overall reputation. Domain reputation API lookups provide real-time data with low-latency response times. While IP reputation focuses on the trustworthiness of the IP address, domain reputation looks at Jan 7, 2025 · The evolution of email deliverability: from IP reputation to domain reputation. If you’re using a service that has you on shared IPs, your delivery can be blacklisted simply because one of your neighbors on the IP address sent spam. Useful to quickly know if a domain has a potentially bad online reputation. You also get a reputation score for your IP address as well. To fully understand sender reputation, it's important to explore its two key components – IP and Domain Reputation. “IP reputation scores never change. Impact : Both affect email deliverability, but changing the IP address can sometimes improve your email reputation faster than changing your domain. Email sender reputation is a blend of IP and domain reputation. Factors for Domain Reputation. Let us break them down: IP Reputation. Domain reputation vs IP reputation. Domain Nov 5, 2024 · Scope: Domain reputation is tied to your domain, or email service provider while IP reputation is tied to the IP address sending the email. Domain Reputation: What’s the Difference? After exploring the individual concepts of IP reputation and domain reputation, it’s essential to understand how they differ and interact in the context of email deliverability. Your top priority should be to invest in individuals who really understand reputation. The post Email Sending Reputation 101: IP Reputation vs. Oct 18, 2022 · So, if have a good IP reputation, then your emails are more likely to get delivered to the recipient’s inbox. But there’s more to the story. If the domain names don't match, the sender is likely to be a spammer, and the overall SRL rating for the sender is increased. IP reputation can be influenced by other users sharing the same IP address with you, and since it can be changed, it is a short-term indicator of your online perception. By entering your IP, domain, or network owner details, this tool provides real-time threat data and generates a detailed report on Jan 23, 2025 · Email reputation is a dynamic score assigned to your email sending identity – be it an IP address or a domain. what malware is associated with this domain; Vetting - e. Learn the difference between IP reputation and domain reputation, and how each affects your overall email reputation. IP-Reputation . Other characteristics include spam complaints, industry blacklists, and more. Complaint Rate IP address reputation Every device connected to the Internet has an IP address assigned to it. Jun 21, 2018 · Except for this: if your domain reputation is high, but you switched to a provider that has a low IP reputation, then you're at risk of having lowered your domain reputation. Sep 6, 2022 · The thing is, if you use the same domain, your reputation will follow you. Domain Warm-Up: Targets the reputation of the domain (yourcompany. Whitelisted IP Reputation. But first, let’s understand what IP reputation is and how it’s different from domain reputation. Check if a domain name is classified as potentially malicious or phishing by multiple well-known domain blacklists like ThreatLog, PhishTank, OpenPhish, etc. Your Sender Score provides high-level insight into your sender IP reputation. IPV4 and IPV6: Mar 9, 2025 · IP Reputation vs. Scan malicious URLs and perform domain reputation API lookups to determine domain age, phishing & malware, parked domains, disposable emails, and similar suspicious behavior. Die Domain-Reputation hilft den Nutzern festzustellen, ob der Besuch einer Website sicher ist oder nicht. A high sender score Aug 20, 2020 · The ultimate target should be to get closer to 100 as possible. For reference, your IP address is a numerical sequence used to identify a network-connected device, such as your laptop. IP reputation can be a concern if you share a sending IP address with other senders. Beide sind entscheidend für die E-Mail-Zustellung. What is Domain Reputation? Domain reputation has nothing to do with your IP address, this is entirely depends upon the emails sent from the Domain. There are currently five reputation levels in the Internet Service Database (ISDB), and custom reputation levels can be defined in a custom internet service. the device or server corresponding to a specific IP address. Feb 13, 2024 · Reputation Evaluation: Talos assesses the reputation of your domain or IP as Good, Neutral, or Poor based on evaluations by other email service providers. Both are critical, but they function in distinct ways. As it’s closer to 100, more receiving email servers are going to trust your emails. Many factors influence email deliverability, with two key elements being your IP reputation and domain reputation. About this episode: IP reputation vs domain reputation, what’s more important? In this video, Sinch Mailgun expert Nick Schafer explains the key differences between the two, and why domain reputation is becoming more critical. The IP warming theory and approach are similar to domain warm-up. Domain Warm-Up. Apr 19, 2024 · This article examines your email’s IP reputation and how to check and improve it. To measure domain reputation, they check the history of the sender’s domain address. The foundation of a reliable domain reputation hinges upon the selection of a reputable web hosting service. Deliverability Services. Erfahren Sie, wie Sie die Domain-Reputation überprüfen und verbessern können, um höhere Öffnungsraten und eine bessere Zustellbarkeit zu erreichen. Both influence deliverability, with domain reputation affecting all emails from a domain and IP reputation affecting emails sent from a specific IP address. Domain Reputation Vs. Sending from a shared IP address means that you will send alongside several other Klaviyo customers, which also means a shared sending reputation. Using a battle-tested IP from one of the best ESPs or mailbox providers won’t help much if your sending domain is known in the network for mailing unsolicited messages. Types of IP Reputation. An email blacklist or DNSBL (Domain Name System-based Blackhole List) is a list of those domain names or IP addresses that are associated with suspicious or spam content from untrustworthy sources. Or else, your emails might get caught in to the spam trap. nyrutjmyarfnmcdoczpqrxmeguhjcvgajixhqnuwyskrltzszndtsayxwkthgnbyuritzkcgvuwujc