Overview

UCEPROTECTL1 (dnsbl-1.uceprotect.net) is uceprotect.net’s primary level zone. If your IP is listed here, it typically means you have either had an open relay or you have a reverse-DNS problem. Once corrective action has been taken your IP should be delisted in seven days.

How it works

UCEPROTECTL1 lists IPs based on the following criteria:

• If a set of IP addresses is flagged, it will start with a listing in the level one list. IP addresses can be flagged for the following reasons:
  
  • Unsolicited Bulk Email (UBE) in their Spam traps. This could be a result of a compromised email account, an Open Relay, or simply sending mass emails / marketing and not following best practices.
    
• If within seven days, that spam has not stopped, the listing will escalate to contain much broader ranges of IP addresses

UCEPROTECTL1 Blacklist Removal

UCEPROTECTL1 blacklist listings and delistings are automated so removal will typically happen automatically after corrections have been made and the IP addresses are no longer flagged. More information about UCEPROTECTL1 can be found at their website: http://www.uceprotect.net/

Worried your IP or domain is on a blacklist? Run our Email Blacklist Check to scan it against 50+ of the most common blocklists.

Frequently Asked Questions:

The UCEPROTECTL1 blacklist is often used by email service providers, internet service providers, and spam filters to block messages from individual IP addresses or even entire ranges. If your sender reputation is affected, your emails may end up in spam folders and hurt deliverability.

What is UCEPROTECTL1?

UCEPROTECTL1 (dnsbl-1.uceprotect.net) is a DNS-based blacklist that identifies IP addresses suspected of sending spam or having poor email practices. It’s operated by UCEPROTECT Network and is often used by mail servers and certain blocklists to filter unwanted email traffic.

Why is my IP listed on UCEPROTECTL1?

Your IP address may be listed because it was detected sending Unsolicited Bulk Email (UBE), acting as an open relay, or failing reverse DNS checks. Sometimes, listings happen due to infected devices, compromised email servers, or compromised accounts on your network. It's important to understand the reason behind your listing to prevent future occurrences.

How do I remove my IP from UCEPROTECTL1?

Removal is fully automated, so there is no need to do a UCEPROTECT1 blacklist removal request. After you stop any spam activity and secure your server, the listing should automatically expire within seven days. If you need immediate removal, UCEPROTECT offers a paid express removal option on its website.

How long does UCEPROTECTL1 delisting take?

Normally, automatic delisting happens about seven days after spam stops. This delay helps confirm that the root cause has been fixed and no further spam is coming from your IP range.

Does UCEPROTECTL1 charge for removal?

Standard removal is free and automatic once the issue is resolved. If you want expedited removal without waiting seven days, UCEPROTECT provides an express removal service for a fee.

Can I prevent future listings on UCEPROTECTL1?

Yes. To avoid being blacklisted again, secure all mail servers, close open relays, and use proper email authentication methods like SPF, DKIM, and DMARC. Make sure you do not send bulk emails without clear consent.

Will being listed on UCEPROTECTL1 affect my email deliverability?

Possibly. Some smaller email providers, spam filters, and hosting companies use UCEPROTECTL1 to block or score incoming mail. However, most major email providers, like Google and Microsoft, typically do not rely solely on an external blacklist. If your IP is listed, your messages may still be accepted by large services but could be blocked or delayed by smaller networks or strict filtering setups.

If your emails are landing in spam folders or being blocked by email providers, you may need to review your email deliverability practices. Ensure your SPF, DKIM and other records are set correctly, and confirm that all unsubscribe requests are respected.

For detailed information on delisting single IP addresses or large ranges, visit UCEPROTECT’s official website.