Email Infrastructure

106 articles on email infrastructure.

SMTP Relay Connector Setup: Secure Routing, Testing, and Troubleshooting

Set up an SMTP relay connector for apps, printers, and mail servers. Learn routing, authentication, DNS, testing, and fixes for delivery errors.

Learn SMTP relay meaning, how relays route email, which ports and settings to use, and how to set up, secure, and test a relay.

Learn how to choose and configure SMTP relay software, secure authentication, set DNS records, troubleshoot delivery, and verify email sending.

Set up Gmail email authentication with SPF, DKIM, and DMARC. Use real DNS record patterns, verify alignment, and troubleshoot failures.

Choose the right SMTP relay port for apps, servers, and devices. Compare ports 25, 465, 587, and 2525, TLS modes, testing, and fixes.

Choose a transactional email provider with a practical framework for authentication, APIs, webhooks, testing, deliverability, and costs.

Set up Microsoft 365 SMTP relay with the right connector, MX host, DNS, and tests. Fix common relay errors and choose the right sending method.

Configure SMTP relay M365 safely with an Exchange Online connector. Compare relay, SMTP AUTH, and Direct Send with records, tests, and fixes.

Learn transactional emails vs marketing emails, including compliance, deliverability, consent, examples, setup, and a practical sending workflow.

Set up SMTP relay Exchange Online for devices and apps, choose the right sending method, configure connectors, test delivery, and fix failures.