Website contact form sends mail intermittently

Scenario

A business website contact form sometimes works and sometimes drops mail with no user-facing error.

Recommended Resolution Path

1. Check the application logs and SMTP provider logs together.
2. Review SPF, DKIM, and DMARC alignment for the sending domain.
3. Use authenticated SMTP or API transport instead of local mail() if possible.
4. Rate-limit and validate the form to reduce spam-triggered blocking.

Technician Notes

Confirm the business impact, document the root cause, and capture any preventative follow-up in the PSA or client knowledge base.