Email Series
Sendmail & Email on AIX
Follow this 7-article path from email architecture fundamentals through SMTP configuration, AWS SES relay, troubleshooting and automated notifications.
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Understanding Email Architecture in AIX
MUA, MTA, MDA, DNS MX records and enterprise email flow.
Understanding Sendmail in AIX
sendmail.cf, rulesets, mailers and queue processing.
Installing & Preparing Sendmail
Toolbox packages, SASL/TLS verification and dependencies.
Configuring Sendmail SMTP Client
SMART_HOST, masquerading, access.db and TLS setup.
AWS SES SMTP Authentication
Connect AIX sendmail to Amazon SES with AUTH and relay controls.
Troubleshooting Sendmail
Queue hangs, DSN failures, DNS and TLS diagnostics.
Automating Email Notifications
Cron alerts, mailx scripts and structured notification templates.