Bluehost Web Hosting Help

Spam Hammer


SpamHammer is a tool we have created in house to combat spam. SpamHammer is included in all hosting account and can be enabled in the Mail section.

What is SpamHammer

Spam Hammer is a method of defending e-mail users against spam by "temporarily rejecting" or any email from a sender it does not recognize. Bluehost defers connections from mail servers we do not have in our whitelist. This simply means we ask sending mail server to try again later. This is a form of "graylisting".

If the mail is legitimate, the originating server should retry, per mail standards. This may range from 11 seconds to a few hours. After sufficient time has elapsed, the email will be accepted. This will not happen with common mail senders, such as SpamExperts, our own mail servers or as we whitelist IP's as appropriate.

If the mail is from a spammer, it will probably not be retried since a spammer goes through thousands of email addresses.

What are some spamming sources?

  • These are often virus infected home PCs.
  • Occasionally they are infected web servers (including scripts on some servers).
  • In many cases, they are a dedicated spam server with too many addresses to bother retrying. Many do retry after a few seconds (thus the +11 second requirement) when deferred.

How do I enable Spam Hammer

  1. In your cPanel, click the Spam Hammer icon in the Mail section.
    The spam hammer icon.
    The spam hammer icon.
  2. Select the domain or email address to enable it on.
    NOTE:It can be enabled for a single email address or for all addresses on a domain. Spam Hammer can only be enabled for a domain if it has email accounts.
    The save button.
    The save button.
  3. Click Save

If the domain has SpamExperts service, the domain is grayed from using Spam Hammer because SpamExperts mail servers are already whitelisted.

Although Spam Hammer will stop many SPAM emails from reaching you, there is a possibility of blocking legitimate emails from reaching your account as well. Please take this into consideration before enabling Spam Hammer.

Knowledgebase Article 65,296 views bookmark tags: email filter hammer spam

Was this resource helpful?

Did this resolve your issue?

Please add any other comments or suggestions about this content:

Recommended Help Content

How to Turn On Spamassassin (Our Free Spam Filter)

I'm getting a ton of spam and I don't know what to do! I would like it filtered and/or dropped from the server!

Eliminate Spam

Getting spammed? What does Bluehost recommend?

Email Antivirus and Antispam Protection

Do you offer antivirus and anti-spam protection for e-mail account?

Related Help Content

Email Filter Setup

How do I setup an email filter?

Receiving Large Amounts of Spam

I am getting a large amount of SPAM in my mail account. I have SPAM filters on, but they are still getting through.

Spam Prevention

Explanation of how spam works and common prevention tips

Accessing your Spam Folder

General Instructions on how to use the spam folder with webmail

Spam Assassin

Explanation of what SpamAssassin is and how it works

Deleting a large number of emails from an account

There are a large number of emails or spam that need to be deleted from an email account.

Hiding email address from harvester bots, spiders, etc.

I am having problems with being spammed. I believe that my email address has been harvested (taken off my site and sold to spammers). Can I hide my email address, but still have people email me?

SpamExperts Spam and Virus Filtering

What is SpamExperts?