Content Filter Settings Domain-wide
The Administrator can select default settings for the entire domain. If the settings for a particular mailbox are not deliberately selected and modified, it will use these settings.
Spam Filter Settings
The Anti-Spam filter settings have the most options. You can choose from various presets for filtering, or customize your own, with any level of granularity.
Messages that are spammy can be delivered with their subject lines rewritten. Spam messages can be quarantined. And you can choose the score at which each of those happens. Our standard setting quarantines mail at a score of 7.0. But you might want to make this number higher or smaller, or add the option to rewrite the subject. It's entirely in your control. Adjust the score, but remember: it's a balancing act between catching spam and false positives.
Anti-Phishing Filter Settings
Anti-Virus Filter Settings
Your options for virus-infected emails are much simpler: Do you want to be notified when a virus-infected message is quarantined?
Message-Size Filter Settings
You can opt to reduce the maximum allowed message size for your email. Our maximum is 150MB.
Banned File Types Filter Settings
Banned File Types are messages that contain various types of dangerous enclosures. The standard filetypes blocked by this filter include: .bat, .cmd, .com, .cpl, .dll, .exe, .pif, .scr, .rar, and .vbs.
These restrictions apply to files embedded inside other files, like zip or tar files too.
Besides quarantining these emails and deciding if you want a notification, you can allow them to be delivered. You can even set a "plus extension" for delivery, so you can have the message delivered to a variant of your email address, like firstname.lastname@example.org Some people like to use this to support client-side filtering.
The default penalty for a message with an identified language that does not match your personal list, is 5 points. You can increase or decrease this to whatever you prefer. Picking a number substantially higher than your quarantine cutoff point (default is 7.0) will make sure those messages go to the quarantine, unless they are overridden by an allow list entry.