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--- hints:spam_virus_filtering_classic_linux [2021/01/16 17:29]
admin
+++ hints:spam_virus_filtering_classic_linux [2021/03/06 12:19] (current)
admin [Where spam and viruses go]
@@ Line 1: / Line 1: @@
-====== Classic Linux hints: spam and virus filtering in Classic Linux ======
+====== Spam and virus filtering in Classic Linux ======
+[ [[:Classic Linux]]. ]
+(Analogous information will be made available in the near future for the [[:DirectAdmin]] environment.)
 Spam and virus filtering in the [[:classic_linux|Classic Linux]] environment is done in two different places.
-First, when incoming mail arrives via SMTP, any mail that either contains an identifiable virus
+First, when incoming mail arrives via SMTP, any mail that either contains a clearly identifiable virus (as diagnosed by **clamd**), or is spam with a high degree of certainty (as diagnosed by **rspamd**), is immediately rejected and never accepted. The sender will get a bounce explaining why the email was rejected. This is not under user control.
-(as diagnosed by **clamd**), or is spam with a high degree of certainty (as diagnosed by **rspamd**),
-is immediately rejected and never accepted. This is not under user control.
+Second, any mail that is accepted, which might or might not be spam, is spam-filtered via **SpamAssassin**. This is under control of the user, and can be switched on or off via the [[:Virtualmin]] control panel.
+====== Where spam and viruses go ======
+If you go to the menu:
+<tab>Virtualmin => Server Configuration => Spam and Virus delivery
+you can see which folders are configured by default to receive spam and viruses. (You can also change these if you want to, but please exercise great caution, and make a screenshot before you make changes. Then you can restore any changes if needed.)
+These spam and virus folders will be automatically created as soon as your first spam or virus is received.
+Note, however, that in our current system (see [[hints/classic_linux_mail_flow|Classic Linux mail flow]]) if an incoming email contains a known virus, it is immediately rejected and never reaches your account nor any virus folder. So in practice no virus-infected email should ever reach you or your virus folder.
+===== View spam and virus folders in Roundcube webmail =====
+Roundcube webmail might not automatically show you the spam and virus folders. To make them visible, please do the following.
+There is a little icon near the top of the screen, a little to the right of your email address, that looks like three dots, vertically stacked. (It looks like this **⋮** on devices with the right fonts.) Clicking on this will give you a pop-up menu from which you can click on Manage folders. Now you can enable or disable the folders you want to see, including the spam and virus folders.
+To actually access mail in these folders, click on the Mail icon at the left, then on a folder.
+===== Teaching the system to recognize spam or no-spam =====
+  * [[hints:teaching_system_recognize_spam_not|Teaching the system to recognize spam or not-spam]]
+====== Navigation ======
+Below is a small selection of useful pages. Please see the sidebar menu for many more.
+Some pages reside in a separate [[hints:sidebar|Hints]] menu. It you find yourself
+there, just follow the [[:start|Top]] link to get back to the main menu.
-Second, any mail that is accepted, which might or might not be spam, is spam-filtered via
+  * [[:billing_system|Billing System (revised for 2020)]]
-**SpamAssassin**. This is under control of the user, and can be switched on or off via the
+  * [[:classic_linux|Classic Linux (revised for 2020)]]
-[[:Virtualmin]] control panel.
+    * [[hints:spam_virus_filtering_classic_linux|Spam filtering in Classic Linux]]
+    * [[:File layout in Classic Linux]]
+    * [[hints:classic_linux_password_changes]]
+  * [[:DirectAdmin|DirectAdmin (revised for 2020)]]
+  * [[:alpine_mua|Command-line mail user agent Alpine]]
+  * [[:Plus addressing]]
+  * [[:ssl_certificates|SSL certificates]]
+  * [[:Classic Linux vs DirectAdmin]]
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