Using the Sendmail Reject List and Spam Filtering service

The control panel offers two options - the Sendmail Reject List and Spam Filtering service - that vary in their approach and flexibility in managing spam.

While the Sendmail Reject List enables effortless global control on spam, the Spam Filtering service allows for discretionary management of spam by the users themselves.

# Sendmail Reject List

Email sources that you include in the Reject List are rejected by your mail server.

## Advantages

- The Sendmail Reject List enables you to exercise global control over email messages that are relayed to the sites hosted on your server.

- Rejecting spam at the server level correspondingly reduces the scale of spam filtering at the user level. This releases system resources that would otherwise be utilized for scanning.

- Rejecting spam at the server level reduces the risk of email viruses infiltrating the network.

## Disadvantages

As the administrator of the control panel server, only you can exercise the right to control and manage spam using the Reject List. Users do not have the flexibility to access or review email messages that originate from a blacklisted source.

# Spam Filtering service

While the Sendmail Reject List only allows rejection of spam email messages, the Spam Filtering service allows discretionary management of spam.

When you enable spam filtering, you delegate control and management of spam filtering to the User Administrator. Emails that originate from the Blocked Senders List (created by the User Administrator) are identified as spam. The spam email is accepted by the mail server and relayed to the site. Depending on the spam management options set by the User Administrator, the spam may be deleted, delivered as an attachment, or quarantined in a spam folder.

## Advantages

- Spam management using the Spam Filtering service allows delegated management and flexibility in controlling spam. The User Administrator can review the email messages and choose to delete spam email messages, have them delivered as an attachment, or quarantine them in a spam folder.

## Disadvantages

Filtering at the user level introduces security risks posed by email viruses.