Greylisting is a method of defending e-mail users against spam. A mail transfer agent (MTA) using greylisting will "temporarily reject" any email from a sender it does not recognize. If the mail is legitimate the originating server will, after a delay, try again and, if sufficient time has elapsed, the email will be accepted. If you wish to enable Greylisting in Smartermail, follow the instructions below to do so.

The following method applies to SmarterMail 8.x - 12.x:

Follow these steps to enable greylisting:

Log in to SmarterMail as the system administrator.

Click the Security icon.

Click Greylisting.

Click the Enable Greylisting checkbox.

Click Save.