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Support − EMail
  |  Monday, February 27, 2017 10:48:06 AM

E-Mail Spam Scanning

Spam Scanning

 
Spam is unsolicited commercial e-mail. Spam is a problem for every e-mail user. Mathbox mail servers filter hundreds of thousands of spam messages on a daily basis. If your e-mail address falls into the wrong hands, you alone could be dealing with hundreds or thousands of spam messages a day.

 
Mathbox Spam Scanning Options
Mathbox provides three email scanning options, Blocking, Non-Blocking, and No-Processing. The default option is Blocking.

Please note: Spam scanning options may be requested domain wide or on individual mail boxes.

 
Blocking
Incoming delivery attempts are examined at both the communications level and the message content level.

The communications level checks that the sending SMTP server is configured as a mail server, which prevents infected personal computers from acting as a SMTP server to send spam. The HELO/EHLO of the sending SMTP server must not be an IP address and must be a valid, resolvable node name per RFC. The domain of the sending SMTP server must have a DNS MX record or a DNS A record as required by RFC (Request For Comment). The IP address of the sending SMTP server must be a statically assigned IP address, not a dynamically assigned IP address. The IP address of the sending SMTP server must have a DNS reverse pointer (in-addr.arpa) record.

The IP address of the sending SMTP server must not be listed as a spam source.
The message content level checks for text that occurs only in specific spam messages or is typical of spam messages. All encountered URI (domain names) are checked against a list of spam related domains.

At any point in SMTP protocol that allows the return of an error code, the spam scanners can decide that the sending server is a spam source or that the message is a spam message, which will cause the message to be rejected. Messages that are accepted may be suspected of being spam and that fact is tagged in the message headers.

If spam folder usage is enabled on the recipient mailbox, then the messages that are tagged as possible spam are placed in the spam folder where users can retrieve the occasional good email that was sent to spam. If spam folder usage is not enabled, all accepted messages are sent to the recipient's inbox.

 
Non-Blocking
All messages are examined as described in Blocking and their status is tagged with headers, but with the exception of some major communications level errors, the messages are allowed through.

If spam folder usage is enabled on the recipient mailbox, then the messages that are tagged as possible spam are placed in the spam folder where users can retrieve the occasional good email that was sent to spam. If spam folder usage is not enabled, all accepted messages are sent to the recipient's inbox.

 
No-Processing
No messages are examined and all messages are allowed through, even those with communications level errors as long as the message is complete. Because the messages are not examined, spam status tagging is not possible. Without spam tagging, filtering to a spam folder is not possible.

All messages are delivered to the recipient's inbox.

 
WebMail Access
In Internet Explorer, go to http://www.mathbox.net. In the WebMail Logon box in the panel on the right, enter your E-mail Address and Password. Click on the Logon button.

 
Managing Spam - Reporting messages as Junk/Spam
You must be logged in to Webmail to perform this function.

When one or more messages are selected and the "Mark as Junk" icon is clicked, two actions occur:

1. The selected messages are attached to a new message, which is addressed and sent to spam@mathbox.com with a request to review the attached messages as possible spam.
NOTE: Please do not use this tool to report messages to which you subscribed and no longer want. If you do so and Mathbox staff does not realize the message originated from a valid list, your action may prevent other Mathbox customers from receiving valid mail. Instead, for valid lists, please use the list unsubscribe method.

2. The selected messages are moved to the Junk (spam) folder.

 
Managing Spam - Mark messages as NOT Junk/Spam
You must be logged in to Webmail to perform this function.

When one or more messages are selected and the "Mark as NOT spam" icon is clicked, two actions occur:

1. The selected messages are attached to a new message, which is addressed and sent to spam@mathbox.com with a request to review the attached messages as NOT spam.

2. The selected messages are moved to the Inbox folder.