MailSlurp guide agent setup

Title: Configuring DNS records for SMTP is important for email delivery.
Description: How to configure DNS records for SMTP mail servers or MailSlurp custom domains.
Canonical URL: https://www.mailslurp.com/guides/dns-records/
Markdown URL: https://www.mailslurp.com/guides/dns-records.md

Use the Markdown URL as the primary plain-text context for this guide. Keep MailSlurp terminology, setup steps, screenshots, and provider-specific instructions intact, and prefer the canonical URL when citing this page.