Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision 		Previous revision
Next revision Both sides next revision
services:e-mail_service:antispam_feedback [2011/03/28 17:38]
marina 		services:e-mail_service:antispam_feedback [2015/08/17 14:07]
giunta
Line 3: Line 3:
 To improve the spam filters we need a feedback by the users.\\ To improve the spam filters we need a feedback by the users.\\
   * **False positives** are legitimate e-mail messages that are mistakenly blocked or tagged as spam by the anti-spam filter .    * **False positives** are legitimate e-mail messages that are mistakenly blocked or tagged as spam by the anti-spam filter . 
-  * On the other hand there are e-mails (**//false negatives//**) that pass the anti-spam filters and arrives on the users' inbox, but they are spam.+  * On the other hand there are e-mails (**false negatives**) that pass the anti-spam filters and arrives on the users' inbox, but they are spam.
  
 ---- ----
  
 Our internal anti-spam [[antispam_filters#​barracuda_spam_firewall|Barracuda Spam Firewall]] assigns to every incoming mail **a spam score value**. Our internal anti-spam [[antispam_filters#​barracuda_spam_firewall|Barracuda Spam Firewall]] assigns to every incoming mail **a spam score value**.
-E-mails with values higher than 3.5 are probably SPAM messages and the anti-spam tags their "//subject line//"  ​with the identifier ​//**[Maybe SPAM]**// +E-mails with values higher than 3.5 are probably SPAM messages and the anti-spam tags their //subject line// 
 + with the identifier **[Maybe SPAM]**. 
  
 **Only e-mails with very-very-high spam score (over 9 points) are blocked by the Barracuda Spam Firewall**. \\ **Only e-mails with very-very-high spam score (over 9 points) are blocked by the Barracuda Spam Firewall**. \\
Line 16: Line 17:
  
   * See here about [[webmail-horde:​filter:​spam-level| how to manage my e-mail spam filters using HORDE ]].   * See here about [[webmail-horde:​filter:​spam-level| how to manage my e-mail spam filters using HORDE ]].
-  ​* See here about [[webmail-squirrel:​filter:​spam-level| how to manage my e-mail spam filters using SQUIRRELMAIL ]].+ 
 +/** inizio commento 
 +See here about [[webmail-squirrel:​filter:​spam-level| how to manage my e-mail spam filters using SQUIRRELMAIL ]]. 
 +fine commento */
   * See at the end of this page about some useful answers to questions about spam.   * See at the end of this page about some useful answers to questions about spam.
 \\ \\
Line 29: Line 33:
  
 When you find a:\\ When you find a:\\
-  * **false positive** --mail tagged as SPAM or "[Maybe-SPAM]"-- which is NOT a real spam +  * **false positive** --mail tagged as **SPAM** or **[Maybe-SPAM]** -- **which is NOT a real spam** 
 or\\ or\\
-  * **a spam** mail without ​"[Maybe-SPAM]" ​in the subject, +  * **a spam** mail** without [Maybe-SPAM]** in the subject, 
-please forward it, with its complete header, to [[spam@sissa.it]] **specifying ​ in the //​subject//​** if it is: a **FALSE POSITIVE** or a **SPAM**.+**please forward it, with its complete header, to [[spam@sissa.it]]** **specifying ​ in the //​subject ​line//** if it is: a **FALSE POSITIVE** or a **SPAM**.
  
 The operators take the notifications and update the filters. The operators take the notifications and update the filters.
Line 44: Line 48:
  
  
-=== Using PINE to send us the complete e-mail header ====+=== Using ALPINE ​to send us the complete e-mail header ====
  
 You must enter/exit the //header mode// with the key **H**. ​ You must enter/exit the //header mode// with the key **H**. ​
-When you enter the header mode The program shows at the bottom of the screen ​the [Display of full headers is now off.] or [Display of full headers is now on.]+When you enter the header mode, the program shows at the bottom of the screen ​an information message like: 
 +  * //Display of full headers is now off//  ​or 
 +  * //Display of full headers is now on.//
 Now you can forward us your e-mail. ​ Now you can forward us your e-mail. ​
 \\ \\
Line 53: Line 59:
 === Using Thunderbird to send us the complete e-mail header ==== === Using Thunderbird to send us the complete e-mail header ====
  
-Open the message and then select the menu **//View//** --> **//Headers//** --> **//All//**: you will see on the message window the complete headers of the messages.+Open the message and then select the menu **View** --> **Headers** --> **All**: you will see on the message window the complete headers of the messages.
 Now you can forward us your e-mail. Now you can forward us your e-mail.
 \\ \\
Line 75: Line 81:
  
 **What is Spam scoring, and the Bayesian Analysis?​**\\ **What is Spam scoring, and the Bayesian Analysis?​**\\
-1) Spam scoring is the rules based system (about 4000 rules) that looks for characteristics in the email. The Spam scores are used to determine what to do with the email. They do not contribute directly to the future analysis. The rules are updated via the Updates Subscription that we maintain on Barracuda. +  * Spam scoring is the rules based system (about 4000 rules) that looks for characteristics in the email. The Spam scores are used to determine what to do with the email. They do not contribute directly to the future analysis. The rules are updated via the Updates Subscription that we maintain on Barracuda. 
-2) Bayesian analysis, also contributes to the Spam scoring. This is done using your notifications,​ so that we can flag some messages as either SPAM, or NOT SPAM in the message log.+  ​* ​Bayesian analysis, also contributes to the Spam scoring. This is done using your notifications,​ so that we can flag some messages as either SPAM, or NOT SPAM in the message log.
  
 \\ \\
  
 **How Can I find out if an email that I am missing was blocked by Barracuda?​**\\ **How Can I find out if an email that I am missing was blocked by Barracuda?​**\\
-You find in the INBOX_spam ​the e-mails stopped by Barracuda because of spam. You receive an e-mail notification concerning e-mails stopped because of viruses. +You find in the Junk folder ​the e-mails stopped by Barracuda because of spam. You receive an e-mail notification concerning e-mails stopped because of viruses. 
-In case you have more questions you can contact the SIS helpdesk@sissa.it and we will check the message log for you.+In case you have more questions you can contact the [[helpdesk@sissa.it|ITCS Helpdesk]] ​and we will check the message log for you.