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Analyzing SpamAssassin results | MaxBulk Mailer ▸ Frequently Asked Questions

Analyzing SpamAssassin results

MaxBulk Mailer ▸ Frequently Asked Questions

Compatible with MS Windows Compatible with MacOS

Analyzing SpamAssassin results

SpamAssassin is a mail server application used to identify and tag spam. It uses a series of rules to analyze each piece of incoming email and then assign a score to that mail based on its characteristics. The higher the score assigned, the more likely that mail is spam. Once a certain threshold is reached for a given piece of mail, SpamAssassin tags the mail as being probably spam.

SpamAssassin handles spam tagging by adding several headers to each piece of mail identified as spam, and by prepending a special identifying string to the subject line of each such message. The headers and subject line can then be used, if you wish, by your mail client to sort probable spam for special handling.

SpamAssassin is a powerful tool, but it identifies suspected spam by its contents. It will probably correctly identify and mark from 80 to 95% of the spam. However, some legitimate mail is likely to be tagged as probable spam, and some spam is likely to slide through untagged because it is written to look more like regular email.

To find out whether a particular message has been tagged as SPAM just take a look at the full header of the email. To analyze the email's header, first you must open it up. Most email programs hide most of the header's content, but here are the instructions for displaying the headers in some of the more popular programs:

Outlook Express: Right-click on the mail to get a drop-down menu. Select "Properties." Select the "Details" tab and the full header appears in the window. You can then click on the "Message Source" button to see the whole message source in a new window.

Mac OS X Mail: Select the "View > Message > Raw Source" and you will see the whole message source right in the message field.

Eudora: With the mail open in Eudora, click on the "BlahBlahBlah" (sic) button in the toolbar.

Netscape Mail (3.0): Open the "Options" menu and select "Show All Headers."

Netscape (+4.0): Open the "View" menu and select "Headers."

In the full header, you will see "X-Spam-Status: Yes" (or "No"), the number of spam "points" the message has received, the "Hits" received by the email and the tags/flags/rule names. Somethimg like this:

X-Spam-Status: Yes, hits= 5.9 required= 4.0 tests= HTML_FONT_FACE_BAD, HTML_IMAGE_RATIO_02, HTML_MESSAGE, IP_WHITELIST,
MIME_BASE64_TEXT, TVD_SPACE_RATIO autolearn= disabled version= 3.002005
X-Spam-Flag: YES
X-Spam-Level: *****

This the explanation of some of those rules:

Test name Score Area Description
SUBJ_ILLEGAL_CHARS 0.10 Subject Subject has too many raw illegal characters
HTML_IMAGE_ONLY_20 0.64 Body HTML: images with 1600-2000 bytes of words
HTML_MESSAGE 0.00 Body HTML included in message
MIME_HTML_ONLY 0.00 Body Message only has text/html MIME parts
HTML_MIME_NO_HTML_TAG 0.51 Body HTML-only message, but there is no HTML tag
HTML_SHORT_LINK_IMG_3 0.52 Body HTML is very short with a linked image
PLING_PLING 0.46 Subject Subject has lots of exclamation marks
MANY_EXCLAMATIONS 0.00 Subject Subject has many exclamations
DATE_IN_PAST_06_12 0.75 Date Date is 6 to 12 hours before Received: date
HTML_TAG_EXIST_TBODY 0.13 Body HTML has "tbody" tag
HTML_IMAGE_RATIO_02 0.19 Body HTML has a low ratio of text to image area
BAYES_60 3.5 Body Bayesian spam probability is 60 to 80%
MIME_BASE64_TEXT 1.7 Body Message text disguised using base64 encoding

You can see the full list here.

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MaxBulk Mailer is a full-featured and easy-to-use bulk mailer and mail-merge software for macOS and Windows that allows you to send out customized press releases, prices lists, newsletters and any kind of text or HTML documents to your customers or contacts.

MaxBulk Mailer is fast, fully customizable and very easy to use. MaxBulk Mailer handles plain text, HTML and rich text documents and gives full support for attachments. With MaxBulk Mailer you will create, manage and send your own powerful, personalized marketing message to your customers and potential customers.

Thanks to its advanced mail-merge and conditional functions you can send highly customized messages and get the best results of your campaigns. You also have support for international characters, a straightforward account manager with support for all type of authentication schemes including SSL, a complete and versatile list manager, support for importation from a wide range of sources including from remote mySQL and postgreSQL databases.

MaxBulk Mailer is a software tool that you purchase once, no need to pay on a per-email basis to submission services!

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