IP Blacklist

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Blacklist

The blacklist check compares the IP address of a mail server to more than 70 DNS-based email blacklists. (Usually referred to as RBL, DNSBL, or Realtime Blacklist). Certain emails you send could not be delivered if your mail server has been blocked. Blacklists of emails are a popular method of lowering spam. Start with an MX Lookup if you are unsure of the address of your mail server. Alternatively, just send [email protected] an email.

Frequently Asked Questions

Find answers to the most commonly asked questions below.

What is an IP Address Blacklist Check?

An IP Address Blacklist Check identifies IP addresses flagged for suspicious activity, such as sending spam or malicious emails.

Why is being flagged during an IP Address Blacklist Check a problem?

Being flagged during an IP Address Blacklist Check can lead to email delivery issues, with emails being marked as spam or rejected by recipients.

How do I perform an IP Address Blacklist Check?

Use an IP Address Blacklist Lookup tool to check your IP against major blacklists and identify any listings.

What are common reasons for being flagged in an IP Address Blacklist Check?

  • Sending spam or high volumes of unsolicited emails.
  • Hosting malware or phishing content.
  • Misconfigured mail servers or compromised accounts.

How can I remove my IP from an IP Address Blacklist?

Identify the blacklist where you're flagged, follow their removal process, fix the root cause, and request delisting.

How can I prevent being flagged during IP Address Blacklist Checks?

  • Monitor your sending reputation regularly.
  • Authenticate emails using SPF, DKIM, and DMARC.
  • Avoid sending spam and ensure proper server configurations.

What is a bulk IP Address Blacklist Check?

A bulk IP Address Blacklist Check allows you to check multiple IPs simultaneously against various blacklists.

How often should I perform IP Address Blacklist Checks?

Regularly check your IPs, especially if you send a large volume of emails or notice delivery issues.