How can i block mail in mac

There are several ways to block mail in a Mac:

Method 1: Using the Mail app

1. Open the Mail app on your Mac.
2. Click on the "Mail" menu and select "Preferences".
3. Click on the "Rules" tab.
4. Click on the "+" button to create a new rule.
5. Select "From" and then "Contains" to specify the sender's email address or domain you want to block.
6. Choose the action you want to take when the rule is triggered, such as "Move to Trash" or "Delete".
7. Click "OK" to save the rule.

Method 2: Using a third-party email client

If you're using a third-party email client like Microsoft Outlook or Mozilla Thunderbird, you can block mail using the client's built-in spam filtering features.

Method 3: Using a third-party spam filtering service

You can also use a third-party spam filtering service like SpamSieve or SpamAssassin to block mail on your Mac. These services can filter out spam and junk mail from your inbox.

Method 4: Using the built-in Spam Filter

MacOS has a built-in spam filter that can help block mail. To enable it:

1. Open the Mail app on your Mac.
2. Click on the "Mail" menu and select "Preferences".
3. Click on the "General" tab.
4. Check the box next to "Use the built-in spam filter".
5. You can also adjust the filter's sensitivity by moving the slider.

Method 5: Using a DNS-based blacklist

You can also block mail by using a DNS-based blacklist like Spamhaus or SORBS. These blacklists maintain lists of known spamming IP addresses and domains, and you can use them to block mail from these sources.

To block mail using a DNS-based blacklist:

1. Open the Terminal app on your Mac.
2. Type the following command to add the blacklist to your DNS settings: sudo nano /etc/hosts
3. Add the following lines to the file: 127.0.0.1 spamhaus.org 127.0.0.1 sorbs.net
4. Save the file and restart your Mail app.

Note: These methods may not be 100% effective in blocking all spam and junk mail, but they can help reduce the amount of unwanted mail you receive.