Dealing with the concerns over spam, viruses, e-mail attacks, and other email related
security threats, best practices are followed to ensure that it has
the highest level of defense possible while still maintaining usability:
- Using a multifaceted defense system for the most efficient results.
- Scan at the perimeter level.
- Delete infected messages.
- Attachment filtering.
- Domain and email based blacklisting / whitlisting..
Developing a defense against viruses and spam is not enough, security
against other e-mailrelated threats, such as:
- Mailbombing.
- Directory harvest attacks.
- Connection Filtering.
- Global Accept and Global Deny Lists.
- Sender Filtering.
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