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4xx Error Codes
5xx Error Codes
When messages are sent or received between two email servers or Mail Transfer Agents (MTAs), the communication uses a series of numeric SMTP codes. These codes are always in pairs, which means both servers transmit the codes until either the conversation is successful, or fails. There are two main
Using Content Expressions
Search Parameter Notation
Usage Examples
Words and Phrases
Word / Phrase Combination
Words / Phrases Combination With Comment
Multiple Words
Wildcard Characters
Boolean Operators
Text Strings and Regular Expression
Multiple Entities
Either One of Two Entities
Optimum Settings for New Installations
Internal Email Protect Differences
Configuring a URL Protection Definition
Configuring a URL Protection Policy
See Also...
URL Protection provides email security technology that protects users against spear phishing and targeted attacks. With a URL Protection policy, your
Applies To...
Overview
Implementing SPF for Outbound Email Delivery
Creating the DNS Entry
Applies To... This page applies to new clients connecting with Mimecast using the Connect Application. If you are not using the Connect Application, click here. Overview Sender Policy Framework (SPF) is an open standard
