Overview of Paubox Inbound Security

Inbound Security is included with Paubox Email Suite Plus and Paubox Email Suite Premium (not Paubox Email Suite Standard). 

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Our inbound security solution performs 3 sets of checks on every incoming email:

First stage: we validate the sending domain / server
 - This includes validation of the sender’s domain, SPF record verification, and checking the reputation of the sending email server, among other lookups performed in this stage. 
 - Invalid emails are rejected and bounced back to the sender. 

Second stage: we scan each email for viruses and phishing attacks.
 - This includes embedded macros, phishing links, ransomware and etc.
 - Emails identified as viruses or phishing attacks are placed in the Quarantine, rather than delivered

Third stage: we evaluate each email for “spamminess” 
 - This is a complex algorithm that evaluates both content and metadata
 - Emails that are identified as “spam” are placed in the Quarantine, rather than delivered. 
 - Blacklist and whitelist rules can tailor the “spam” classification