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WHEN TO GET HELP

When to get help with an email blocklist listing

Spamhaus never charges to remove a listing and no one can buy a faster one. Who decides each list, who may ask, and when help is worth paying for.

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There is no fee to get off a Spamhaus blocklist. Spamhaus makes every SBL removal decision itself, never charges a fee to remove any of its listings, treats any offer to remove one for a fee as a scam, and states that no third party can influence or expedite its removals. Help is worth paying for when you need someone to find and fix what caused the listing, not to buy the removal.

Read the rejection message first

Mail servers can look up the IP addresses and domains connected with a message in a DNS blocklist (DNSBL), then reject the message in real time with a delivery code (how Spamhaus blocklists work). The rejection is your starting point. Microsoft 365, for example, rejects mail from IP addresses on its own blocked senders list with a message that starts like this and then points to Microsoft's delist portal (Microsoft's delist guide):

550 5.7.606-649 Access denied, banned sending IP [Source IP address]

Note which list is named and whether it lists an IP address or a domain. The SpamCop blocklist, for example, lists only IP addresses that send spam, never email addresses or domain names. If you are handing the problem to someone else, keep the full rejection with the rest of the evidence to collect when email delivery fails.

Who decides, and who may ask

Each list has its own rules for who can ask for removal and how quickly listings clear.

  • Spamhaus SBL. The Internet Service Provider (ISP) in charge of the listed IP asks, once it agrees the problem is solved. Removal is solely Spamhaus's decision.
  • Spamhaus CSS. Start at Spamhaus's IP and Domain Reputation Checker, after the cause is identified and corrected. Self-removals are limited. Listings normally expire three days after the last spam detection.
  • Spamhaus DBL (domains). Look up the domain in the Reputation Checker and follow its instructions. Most listings expire automatically once the activity stops.
  • Spamhaus PBL. Removal is only for an IP that runs a mail server, has forward and reverse DNS set up, and keeps outbound port 25 closed to every other device. Requests from free email accounts are not processed.
  • Microsoft 365. Use the delist portal, with the email address that received the bounce and the IP address in the error. Removal might take up to 24 hours or longer. For error 5.7.511, email delist@microsoft.com with the full code and IP address instead; Microsoft will contact you within 48 hours with the next steps.
  • SpamCop. No request needed: IPs are delisted automatically after 24 hours with no new spam reports, and SpamCop asks you not to write in for early delisting.
  • Barracuda. Use the removal request form, with your mail server's IP address, your email address and phone number. Requests are typically processed within 12 hours with a valid explanation, and multiple requests are ignored.

Spamhaus's general FAQ also requires removal requests to come from the registered owner of the domain or IP address, and points anyone else to their service provider.

When you can usually handle it yourself

Signs it is time to get help

  • The listing comes back after removal. Spamhaus re-lists an IP on the Exploits Blocklist (XBL) when the detected problem has not been corrected. CSS re-lists an IP immediately if the problem continues to be detected.
  • You don't know what caused it. A common cause of a SpamCop listing is a compromised computer on your network sending spam. For the XBL, the next most common issue is not the listed device itself but something behind it that is compromised.
  • Your website or domain may have been compromised. Spamhaus lists legitimate domains on the Domain Blocklist (DBL) when it identifies a compromised website, for reasons that include outdated software, substandard security or fraudulent access.
  • You can't answer the removal request's questions. Spamhaus asks what caused the spam issue, what you did to solve it, when you solved it and what you did to prevent it happening again.
  • Microsoft returned 5.7.511. Microsoft does not let you use the delist portal for that code; you email delist@microsoft.com instead, with the full code and IP address.

What help can and cannot do

A Spamhaus removal is not guaranteed. Spamhaus's general FAQ states that submitting a removal request does not guarantee removal, and its DBL removal form carries no guarantee either. Microsoft warns that an IP address might be blocked again if the messages are abusive or malicious.

What outside help can do is work through the evidence. DemiEmail investigates reported delivery problems using the available rejection messages, headers, reports and sending configuration, and reports authentication and reputation findings with prioritized, evidence-based next steps. Work is quoted after the setup and scope are understood.

Sources

Questions

Do I have to pay to get off a blocklist?

Not for Spamhaus. Spamhaus never charges a fee to remove any of its listings, and it calls any offer to remove one for a fee a scam.

How long does removal take?

It depends on the list. SpamCop delists an IP automatically after 24 hours with no new reports, Spamhaus CSS listings normally expire three days after the last spam detection, and removal from Microsoft's blocked senders list might take up to 24 hours or longer.

Can anyone guarantee that a listing will be removed?

Not for Spamhaus listings. Submitting a Spamhaus removal request does not guarantee removal, and no third party can influence or expedite Spamhaus removals.

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