SMTP (Simple Mail Transfer Protocol)
Vladimir V. Riabov, Rivier College
Introduction
SMTP Fundamentals
SMTP Model and Protocol
User Agent
Sending e-Mail
Mail Header Format
Receiving e-Mail
The SMTP Destination Address
Delayed Delivery
Aliases
Mail Transfer Agent
SMTP Mail Transaction Flow
SMTP Commands
Mail Service Types
SMTP Service Extensions
SMTP Responses
SMTP Server
On-Demand Mail Relay
Multipurpose Internet Mail Extensions (MIME)
MIME-Version
Content-Type
Content-Transfer-Encoding
Content-Id
Content-Description
Security Scheme for MIME
Mail Transmission Types
Mail Access Modes
Mail Access Protocols
POP3
IMAP4
SMTP Security Issues
SMTP Vulnerabilities
SMTP Server Buffer Overflow Vulnerability
Mail Relaying SMTP Vulnerability
Mail Relaying SMTP Vulnerability in Microsoft Windows 2000
Encapsulated SMTP Address Vulnerability
Malformed Request Denial of Service
Extended Verb Request Handling Flaw
Reverse DNS Response Buffer Overflow
Firewall SMTP Filtering Vulnerability
Spoofing
Bounce Attack
Restricting Access to an Outgoing Mail Server
Mail Encryption
Bastille Hardening System
POP and IMAP Vulnerabilities
Standards, Organizations, and Associations
Internet Assigned Numbers Authority
Internet Engineering Task Force Working Groups
Internet Mail Consortium
Mitre Corporation
Conclusion
Glossary
Cross References
References
Further Reading
INTRODUCTION
Electronic mail (e-mail) is one of the most popular network services nowadays. Most e-mail systems that send mail over the Internet ...
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