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Minor Security Changes to Mail server, and Activating Greylisting
In today’s Blog, we are going to discuss minor security changes to FTP, minor security changes to the Mail server and also activate Greylisting for your mail.
Greylisting is another defense against spamming which rejects emails from senders that it does not recognize. What generic mail senders should retry the delivery after which the server accepts that mail.
Let’s go ahead and login to WHM.
Here we are in the WHM home interface.
Let’s learn about Mail Server:-
Scroll Down to the “Service Configuration set up” and Click the “Mail server configuration”. A new interface will appear.
Scroll down to “Allow Plaintext Authentication” (From remote clients). Change that to ‘No’
If you want to force your customers and their clients to use a secure connection to the mail server scroll down a bit, another healthy setting is “Auto-Expunge Trash”. This cleans up trash and the way it messages the folders their customers on the server. Set that expire time to period such as 30 days.
Then click ‘Save changes’. The mail server will restart, a confirmation message will appear.
I want to show you the main mail server settings. Scroll down to “Service Configuration” and click “Exim Configuration Manager”. A new interface will appear.
This interface lets you configure various settings on the mail server such as forcing an Apache Spam Assassin ‘On’, on all accounts or using a blacklist such as Spam assassin options.
When you are done making changes go to the bottom of the interface and click ‘Save’.
It will take a while for it to Exim to make the changes and then the mail server is ready and a confirmation message will appear.
Scroll down to “email” and click “Greylisting”.
You can enable Greylisting with the switch at the top of the interface. Click it to enable Greylisting. You can also add the enable Greylisting. You can also add the IP addresses of the trusted hosts.
Click the trusted host’s tab enter each IP address or range. Enter a comment to help identify them. And then click ‘Add’. A confirmation message will appear. Greylisting automatically trusts the IP addresses of the common mail providers.
You can enable or disable entries from this list and set them to automatically update when the provider’s change server addresses.
Finally, click Reports to check the Greylisting log files to see how the services performing. Why is the report empty? Because we just configured Greylisting that’s why!
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