You can enable/disable spam quarantine and manage quarantine filter settings for incoming emails in this page.
If you choose to disable spam quarantine, all mails (including spam) will be delivered to your mail servers (unfiltered).
For mails that are detected as spam mails, you may prepend the email subject with [spam] to notify your users that they are spam mails.
This setting can be accessed via "Incoming - Protection Settings" > "Attachment restrictions".
Below are the settings available on this page.
| Setting | Description |
| Manage list of domains and IP addresses with disabled SPF, DKIM, and DMARC checks | This link opens a page which allows you to disable SPF, DKIM and DMARC checks for specific domains, IPs or subnets - so that if, for example, an SPF check fails for any of the specified domains or sender IPs, the system will continue to process the message. |
| Quarantine enabled | Enables/disables the quarantine. If you choose to disable your quarantine, all emails detected as Spam will be delivered to your email server unfiltered. |
| Quarantine threshold |
Messages in Spam Experts that have a combined score above this setting will be classed as spam and will be handled as spam. If this quarantine threshold setting is lowered from the default (recommended) value, more messages will be seen as spam. |
| Beneficial to train threshold |
Messages in Spam Experts which have a combined score between the Beneficial to train threshold and the Quarantine threshold will be considered "unsure" to the filter. A Beneficial to train notation is available, to prepend the subject line of messages receiving this classification (as a warning that this message scored above the threshold which mail is considered to be good mail or "Ham"). This setting is used to tag messages with a specific notation, which are considered suspicious to the filter but not suspicious enough to be treated as spam. All messages with a score below this threshold will be delivered. |
| Sender checks |
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| Skip maximum line length check | There are strict regulations on allowed line length in emails which are automatically enforced by the email software. Some applications or badly developed scripts do not adhere to the official specifications thereby exceeding the maximum allowed line length. This check can be disabled by ticking this box but we advise keeping it enabled to block Spam. |
| Beneficial to train notation | Text added here is prepended to the subject line of all messages classed as unsure. |
| Spam Notation | Subject for all incoming spam mails will be prepended with text added in this field. This feature will become available only if quarantine is disabled. |
| Quarantine response | When an incoming message is detected as spam and quarantined, the response you send to the Sender can be Rejected or Accepted. Accepted: the message will be quarantined and the sender will not get a bounce message. Rejected: the message will be quarantined and the sender will get an NDR. The default and advised setting for incoming mail is 'Rejected'. |
| Require TLS Settings | By default, all email is securely processed using TLS encryption as long as the sending/receiving server provides support for it. Using these settings, you can specify that TLS is compulsory for specific senders/recipients; if a TLS connection is unsuccessful the email will not be processed and delivered. |