FAQ - Refer below to common questions about Redtail's Anti-spam solution:
Below is a look at how the solution reviews your email:
When mail is received, the sender's address is checked against a number of lists of known spammers and the message is immediately rejected if the sending address is on one of these lists.After passing the first check, the message is then scanned for information commonly found in spam and scored based on the findings.
Depending on the magnitude of the score, the message can be delivered normally if the score is very low. A message with a slightly higher score can be delivered and placed in the junk folder with the ***SPAM*** text added to the subject line. Messages with very high spam scores are quarantined and/or deleted.
Related Documentation - SpamAssassin: Overview
If email messages addressed to you were sent to the Quarantine, you will receive an email notification, called an End User Digest (or Digest), in your mail box with the subject of Daily Quarantine Summary from email@example.com. The Digest provides you with a list of the messages addressed to you that have been placed in Quarantine. You can review the message's subject and sender to determine their content and as a result what actions you want to apply to the messages.
- Once a Day
- Twice a Day
- Every Hour
- Every 2 Hours
- Every 3 Hours
- Every 4 Hours
- Every 6 Hours
- Every 8 Hours
There are various fields within a digest. Here is a brief explanation for each:
# : This is the message number you will use to request a release from the quarantine.
Content Legend with explanations:
|S||Level 1 Spam||
Level 1 Spam is a result of a message having a particular score threshold (Example: Scores between 8.01 - 9.00) Note: This varies based on settings.
|s||Level 2 Spam||
Level 2 Spam is a result of a message having a particular score threshold that is higher than Level 1 (Example: Scores between 9.01 or higher) Note: This varies based on settings.
Banned Filetype is a result of a message having a banned file type included within it. (Example: .exe, .pif, .com, etc.)
Virus is a result of a message having contained an identified virus.
Bad MIME is the result of a message having contained bad MIME encoding in the header
Bad Header is the result of a message having contained an invalid header outside of RFC 822 standards
Sometimes, Redtail's spam solution designates a message as spam even though it's a legitimate email. If you decide you want to read the message, you can request it be released. Releasing the message removes it from the Quarantine and delivers it to your mail box.
For example, you may be on a mailing list that sends you notices on deals. You want to receive these notices, but Redtail's spam solution scans the message, scores these messages as spam and sends them to the Quarantine. When you look at your Digest, you will see that these are messages that you indeed want delivered to your mail box.
It is recommended that you add the sender to your Allowed list to prevent future messages from going to the quarantine.
If you do not release a message from the Quarantine, it will automatically be deleted after 96 hours. So if you look at the messages in your Digest, and determine that all of them are spam, you do not need to do anything. The messages will automatically be deleted from the Quarantine.
All users have access to a customizable Allowed senders list within your Redtail webmail client. You, the user, control your personal Allowed senders list to which you can add the addresses of people, organizations, and mailing lists from which you do want to receive mail. If a sender's address is included in the Allowed senders list, messages are filtered for a virus or inappropriate content, but not for spam.
All users have access to a customizable Blocked senders list within your Redtail webmail client in which you can control your personal Blocked senders list. This list allows you to add addresses of people, organizations, and mailing lists from which you do not want to receive “junk email.” The email administrator controls the Global Blocked Senders List, which applies to everyone in the organization.
If a sender's address is included in the Blocked senders list, messages from the address will be deleted and not delivered.
A false positive is an email incorrectly identified as spam. If an email message is scored as spam and sent to the Quarantine, but it really is a legitimate message from a legitimate sender, you can report it as a false positive. If you receive an email that you are questioning why it has been placed within the Junk mail folder, or you have reports of an email not being received from a sender, please feel free to contact us at firstname.lastname@example.org