Greylisting

Greylisting defends email users against spam. When enabled, the mail server will temporarily reject any email from a sender the server does not recognize. If the email is legitimate, the originating server will try again after a delay. After sufficient time has elapsed, the server will accept the email.

Greylisting is Enabled Greylisting is Disabled
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Trusted Hosts

Greylisting will never defer emails from entries on the Trusted Hosts list.

Common Mail Providers

Greylisting will never defer emails from trusted mail providers.

Mail Provider Trust Auto Update
Google  
Symantec Email Security.cloud (Messagelabs)  
MailChannels  
First Data (Financial Institution)  
Amazon SES  
Facebook  
The Vanguard Group (Financial Institution)  
Comcast  
Comodo/Sectigo  
Bank of America (Financial Institution)  
SBCGlobal.net  
Fidelity Investments (Financial Institution)  
Mimecast  
Apple  
Outlook / Hotmail  
AT&T  
McAfee SaaS Email Security (MX Logic)  
cPanel  
Microsoft  
U.S. Department of the Treasury (Financial Institution)  
Verizon  
Broadridge Financial Solutions (Financial Institution)  
Tucows/OpenSRS  
Microsoft Office 365  
Chase Bank (Financial Institution)  
TD Ameritrade (Financial Institution)  
Roadrunner  
Wells Fargo (Financial Institution)  
Yahoo / Verizon Media  
AOL  
Twitter  
No Common Mail Provider settings found.

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