Understanding Open Mode vs. Closed Mode


Thought Leadership

Understanding Open Mode vs. Closed Mode

Rachel King

It’s incredibly frustrating when your server is bogged down with unwanted mail. Naturally, spam accounts for most such messages, but what about other messages that aren’t spam? We’ve written before about how AppRiver helps you divert bulkmail, but there are still other messages that are addressed to users whose names are misspelled or even users who just don’t exist at your domain.

Don’t worry, though, AppRiver has this covered as well.

With our SecureTide™ Spam and Virus protection, admins have the option to put their domain in either open mode or closed mode. Open mode processes all messages regardless of who they are addressed to, sending all valid mail to your server. This is desirable for new accounts that want to make sure that they don’t miss any addresses. Closed mode, however, processes messages for addresses listed on your Customer Portal interface.

What happens to the messages addressed to unlisted addresses? Well, that’s up to you. With the hold action, they are held in the admin quarantine for view and release. But with the delete action, they are permanently deleted. This won’t bounce the messages or let spammers detect valid addresses.

Open mode is always suggested until you’re confident all your users are listed. We recommend our LDAP (Lightweight Directory Access Protocol) tool for that. LDAP keeps all your user addresses, alias addresses, and email groups in sync. As for Hosted Exchange customers, we already take care of that for you!

Learn more about these options and how else SecureTide can work for you.