I created an account on nascar.com about 8 years ago and they relentlessly started spamming me from various accounts (sales, news, alert, etc). I created a rule to block the entire domain and everything from this domain has been successfully transferring to my Trash folder since.
If you want email from specific accounts on this domain, you will have to adjust your settings.
Go to Settings
1. Click: Gear icon
2. Select: Settings
3. On left pane, expand: Inbox
4. Under Inbox, select: Filter Rules
Create Rule
1. Click: Add New Rule
2. Create: Rule Name
3. Click to expand: Add Condition
4. Select: Address
5. Under From, click to expand: All
6. Select: Domain
Enter Domain
1. Locate "is exactly" field
2. Enter: linkedin.com
Add Action
1. On bottom of dialog box, enable: Process Subsequent Rules
2. Click: Add Action
3. Under Add Action, select: desired action
4. Configure your desired action
5. Click: Save