MailSlurp guide agent setup Title: Office 365 SMTP Settings: Server, Port, TLS, Auth, and Testing Description: Configure Office 365 SMTP settings for smtp.office365.com, port 587, STARTTLS, mailbox auth policy, relay choices, and safe MailSlurp validation. Canonical URL: https://www.mailslurp.com/guides/office-365-smtp-settings/ Markdown URL: https://www.mailslurp.com/guides/office-365-smtp-settings.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.