Simple Mail Transfer Protocol project examples using omnet++

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SMTP Performance Analysis in High-Latency Networks

Objective: Execute SMTP in a network with high latency, like satellite or long-distance communication networks.
Simulation Focus: Evaluate the SMTP’s performance in terms of email delivery time, reliability, and error rates. To replicate the numerous latency conditions and assess on how well SMTP manages the latency acknowledgments and reroutes in high-latency settings.

Comparing SMTP with Modern Email Protocols (e.g., IMAP, POP3):

Objective: Compare the performance of SMTP with other email-related protocols such as IMAP and POP3 in terms of email delivery, retrieval, and synchronization.
Simulation Focus: Mimic the scenarios in which the emails are sent, received, and coordinated using SMTP, IMAP, and POP3. Evaluate the parameters such as delivery speed, connection reliability, and bandwidth usage to regulate at which protocol performs better in numerous network conditions.

Securing SMTP with TLS (SMTPS):

Objective: Execute SMTP over TLS (SMTPS) to secure email transmissions against eavesdropping and tampering.
Simulation Focus: Mimic a network environment in which the SMTPS is used for secure email delivery. Assess the effects of encryption on email delivery time, latency, and protocol overhead and relates the performance of SMTPS with standard SMTP to evaluate the exchange among the security and efficiency.

SMTP in Congested Networks:

Objective: Examine the performance of SMTP in a network with high traffic congestion.
Simulation Focus: To mimic a congested network environment and evaluates how SMTP manages the email delivery in heavy load. Evaluate the parameters like delivery time, retransmission rates, and connection constancy to learn the SMTP’s robustness in congested conditions.

SMTP with Quality of Service (QoS) Support:

Objective: Execute QoS mechanisms in a network to selects the SMTP traffic that make sure that the timely email delivery.
Simulation Focus: Mimic a network with mixed traffic types and implement QoS policies that select the SMTP traffic. Evaluates the effects on email delivery time, latency, and overall network performance, especially in scenarios with conflicting high-priority traffic.

Analyzing SMTP with Spam Detection and Filtering:

Objective: Executes spam detection and filtering mechanisms in SMTP servers to minimize the unwanted emails.
Simulation Focus: Mimic scenarios with changing levels of spam traffic and evaluate on how efficient the spam filtering mechanisms are in decreasing the load on SMTP servers and enhancing the delivery of liable emails. Measure the effects on server performance and email delivery time.

SMTP for Large-Scale Email Campaigns:

Objective: Execute and emulate the SMTP in a network handling large-scale email campaigns like marketing or notification systems.
Simulation Focus: Mimic the bulk sending of emails to thousands of recipients and evaluates the performance in terms of delivery time, server load, and bandwidth usage and evaluate how well SMTP scales with increasing volumes of email traffic.

SMTP in Mobile Networks:

Objective: Execute SMTP in a mobile network environment and measure its performance, especially in terms of email delivery and connection stability.
Simulation Focus: To mimic the email sending and receiving over mobile networks with changing signal strength, mobility patterns, and network conditions. Evaluates the effects of mobility on email delivery time, retransmission rates, and overall consistency.

Fault-Tolerant SMTP Server Clusters:

Objective: To make sure continuous email delivery despite server failures to execute a fault-tolerant SMTP server cluster.
Simulation Focus: Mimic the scenarios in which some SMTP servers in a cluster fail and evaluate on how the system retransmits email traffic to sustains the service continuity. Measured the effects on email delivery time, consistency, and server load balancing.

SMTP with DNS-Based Load Balancing:

Objective: To allocate incoming email traffic evenly via multiple servers that execute DNS-based load balancing for SMTP servers
Simulation Focus: Mimic a network with multiple SMTP servers and evaluates on how the DNS-based load balancing enhance the performance like delivery speed, server utilization, and fault tolerance. Compare the efficiency of numerous load balancing methods in enhancing the email delivery.

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