Sanibel Logic’s server based mail server (SmarterMail) provides incredible spam filtering results; in many cases providing a reduction of 95% of spam. Should you prefer to rely on client based spam filtering exclusively, as a Domain Administrator you can disable the SmarterMail spam filtering for your entire domain.
To start, login to your web based mail interface as Domain Administrator and navigate to Settings / Domain Settings, as illustrated here. Make sure you have expanded the Domain Settings folder and not the My Settings folder. Then navigate to Filtering / Spam Filtering. Select the “Override Spam Settings for this domain” option.
Then select the Actions tab, as illustrated here. For low, medium and high probability, select NO ACTION and then depress the SAVE button above to save all changes for both the Options and Actions tabs.
These changes will ensure that all email for your domain is not classified in any way as spam or junk mail at the mail server.
However, individual/personal spam filtering settings can override the domain spam filtering settings so it is necessary to check your personal settings to ensure that you are defaulting to the use of the domain spam filtering options. If you are a Domain Administrator you will see both My Settings and Domain Settings. Collapse the Domain Settings and expand the My Settings and then navigate to Filtering / Spam Filtering and select the Default Spam Settings and save.
If you are not the Domain Administrator, however simply a mail User, then you will see only My Settings, as illustrated here. Navigate to Filtering / Spam Filtering and select the Default Spam Settings and save.
These steps will ensure that all mail flows through the SmarterMail mail server and is not classified in any way as spam or junk.