Update smtp wording

Author: MichalSalon

apps/docs/content/references/smtp.mdx

@@ -75,7 +75,7 @@ Port 25, in particular, is frequently exploited for spam distribution across clo
 - Professional IP reputation management
 - Automated bounce handling
 
-This strict policy stems from a crucial understanding: poor IP reputation from email abuse can cascade across an entire infrastructure. The impact extends beyond email services to affect:
+This strict policy protects platform integrity. Poor IP reputation from email abuse can cascade across an entire infrastructure. The impact extends beyond email services to affect:
 
 - Legitimate web applications
 - Platform response times
@@ -203,4 +203,4 @@ When implementing email functionality in your applications:
 - Implement proper error handling and retry logic
 - Use queue systems for bulk sending to prevent rate limits
 - Monitor delivery status and bounce rates
-- Keep SMTP libraries and configurations up to date
+- Keep SMTP libraries and configurations up to date