Which action can you perform to filter spam at your client computer?
How to filter (spam) emails with the roundcube and cwp
There is no one-size-fits-all solution to the spam problem, and each has trade-offs between incorrectly rejecting valid email (false positives) versus not rejecting all spam (false negatives) – and the time, effort, and expense of obstructing good mail.
Anti-spam methods are classified into four groups: those that involve individual intervention, those that can be automated by email managers, those that can be automated by email senders, and those that are used by researchers and law enforcement officials.
One way to reduce the chances of an email address being “harvested” and targeted by spam is to share it with a select group of correspondents. When sending messages to a group of people who don’t know each other, recipient addresses can be placed in the “bcc: area” so that each person doesn’t get a list of everyone else’s email addresses.
Email addresses found on websites, Usenet, and chat rooms are vulnerable to harvesting.
1st Address munging is the process of obscuring an e-mail address in order to avoid it from being automatically retrieved in this way while also allowing a human reader to reconstruct the original: for example, “[email protected]” may be written as “no-one at example dot com.” Displaying all or part of the email address as an image, or jumbled text with the order of characters restored using CSS, is a similar technique.
Message filtering – automatically move messages to folders
Message Filters will aid in the automation of your email process. Filters can perform acts such as setting a Topic (or tag), moving a message, changing the status of a message, or playing a sound. They can run automatically on the Inbox when new messages arrive, or manually on all files.
The filter window looks like this: Match any message that comes from a Postbox email address or contains the word “invoice” in the subject. Add the topic “Postbox” to such messages and mark them as a “Reminder.”
Finally, decide if the filter should be applied to all accounts. This choice must be chosen during the initial filter development process and cannot be modified later. You can, however, duplicate a filter and make it global.
You can add contacts to a filter without having to open the filter editor once it’s been developed. Click a contact in a message to pull up the Contact Card, then click “connect to filter” and choose a filter from the pop-up menu.
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Pick a client computer in a Static or Dynamic Group and click Show Information to see the details about it. By clicking Computer in the lower left corner, you can also perform actions from the Computers screen.
•To modify the computer’s name or definition, click the edit button. If there is another controlled machine with the same name, you may choose Make Duplicate Name. •FQDN – the computer’s entirely qualified domain name
•Parent Group – Modify the computer’s parent Static group.
•IP – the machine’s IP address.
•Count of Applied Policies – Hover over the amount to see a list of the policies that have been applied to the machine.
•Member of Dynamic Groups – The Dynamic Groups to which the client machine belonged during the most recent replication.
•Alerts – Offers links to a list of current computer issues.
•Unresolved Threats Count – The number of threats that have not been resolved. To see a list of unresolved risks, click here. •Last Connected Time – This field contains information about the last link time. •Detection Engine – The target device’s detection engine version. •Updated – The status of the update.
How to disable client forwarding rules to external domains
FortiMail units accept email for specific email domains and manage email relay to other domains. Email can be scanned for viruses and spam as it travels through the FortiMail unit. The FortiMail unit’s policies and profiles monitor how it checks email and reacts to messages containing viruses or spam. See Configuring policies for more detail on policies. See Configuring profiles for more detail on profiles.
By specifying policies and profiles to search and distribute incoming and outgoing email, FortiMail units can be configured to protect email domains (referred to as “protected domains” in this Administration Guide).
There is a single local email domain that reflects the FortiMail device itself while it is in gateway mode or transparent mode. Protected domains are stored locally on the FortiMail unit’s built-in email server while the unit is in server mode.
Each network interface includes a proxy and/or implicit MTA that receives and relays email in transparent mode. The proxy/implicit MTA responds to SMTP greetings (HELO/EHLO) by default with the host name of the protected domain’s SMTP server. The FortiMail device is hidden behind this “masquerade.” Configuring secure domains has details on configuring the SMTP greeting.