Add email SMTP diagnostic script for docker logs

2026-06-21 14:18:24 +00:00
parent c8ef9cc00d
commit eecd8e24e5
1 changed files with 125 additions and 0 deletions
@@ -0,0 +1,125 @@
+"""
+Diagnostic script for ScrAIbe email (SMTP) connectivity.
+
+Run inside the container to verify:
+- Required env vars are set
+- SMTP connection
+- TLS (if configured)
+- Authentication
+
+Output is written to stdout/stderr so it appears in docker logs.
+"""
+
+import os
+import sys
+import smtplib
+import logging
+
+logging.basicConfig(
+    level=logging.INFO,
+    format="DIAG [%(levelname)s] %(message)s",
+    stream=sys.stdout,
+    force=True,
+)
+log = logging.getLogger("email_diagnostics")
+
+
+def main():
+    # 1) Check required env vars
+    required = [
+        "EMAIL_SMTP_HOST",
+        "EMAIL_SMTP_PORT",
+        "EMAIL_SMTP_USER",
+        "EMAIL_SMTP_PASSWORD",
+        "EMAIL_FROM_ADDRESS",
+    ]
+    missing = [v for v in required if not os.getenv(v)]
+    if missing:
+        log.error("Missing required env vars: %s", ", ".join(missing))
+        sys.exit(1)
+
+    smtp_host = os.getenv("EMAIL_SMTP_HOST")
+    smtp_port = int(os.getenv("EMAIL_SMTP_PORT"))
+    smtp_user = os.getenv("EMAIL_SMTP_USER")
+    smtp_password = os.getenv("EMAIL_SMTP_PASSWORD")
+    from_address = os.getenv("EMAIL_FROM_ADDRESS")
+    use_tls_str = (os.getenv("EMAIL_SMTP_USE_TLS") or "true").strip().lower()
+    use_tls = use_tls_str not in ("false", "0", "no")
+
+    log.info("SMTP config:")
+    log.info("  host: %s", smtp_host)
+    log.info("  port: %s", smtp_port)
+    log.info("  user: %s", smtp_user)
+    log.info("  from: %s", from_address)
+    log.info("  use_tls: %s", use_tls)
+    log.info("  password: %s", ("set" if smtp_password else "NOT SET"))
+
+    # 2) Connect to SMTP server
+    log.info("Attempting SMTP connection...")
+    try:
+        if use_tls:
+            server = smtplib.SMTP(smtp_host, smtp_port, timeout=15)
+            log.info("Connected (SMTP) to %s:%s", smtp_host, smtp_port)
+        else:
+            server = smtplib.SMTP(smtp_host, smtp_port, timeout=15)
+            log.info("Connected (SMTP, no TLS) to %s:%s", smtp_host, smtp_port)
+    except Exception as e:
+        log.error("SMTP connection failed: %s", e)
+        sys.exit(1)
+
+    # 3) EHLO
+    log.info("Sending EHLO...")
+    try:
+        ehlo_resp = server.ehlo()
+        log.info("EHLO response code: %s", ehlo_resp[0])
+    except Exception as e:
+        log.error("EHLO failed: %s", e)
+        server.quit()
+        sys.exit(1)
+
+    # 4) STARTTLS if configured
+    if use_tls:
+        log.info("Attempting STARTTLS...")
+        try:
+            server.starttls()
+            server.ehlo()
+            log.info("STARTTLS succeeded.")
+        except Exception as e:
+            log.error("STARTTLS failed: %s", e)
+            server.quit()
+            sys.exit(1)
+    else:
+        log.info("TLS not requested; continuing without STARTTLS.")
+
+    # 5) AUTH LOGIN
+    log.info("Attempting AUTH LOGIN with user: %s", smtp_user)
+    try:
+        server.login(smtp_user, smtp_password)
+        log.info("AUTH LOGIN succeeded.")
+    except smtplib.SMTPAuthenticationError as e:
+        log.error("AUTH LOGIN failed (bad credentials?): %s", e)
+        server.quit()
+        sys.exit(1)
+    except Exception as e:
+        log.error("AUTH LOGIN failed: %s", e)
+        server.quit()
+        sys.exit(1)
+
+    # 6) Optional: quick MAIL FROM / RCPT TO / QUIT test (no message sent)
+    log.info("Testing MAIL FROM / RCPT TO / RSET...")
+    try:
+        server.mail(from_address)
+        # Use from_address as recipient for test
+        server.rcpt(from_address)
+        server.reset()
+        log.info("MAIL FROM / RCPT TO / RSET succeeded.")
+    except Exception as e:
+        log.warning("MAIL FROM / RCPT TO / RSET failed (non-critical): %s", e)
+
+    # 7) Quit
+    server.quit()
+    log.info("All email diagnostics passed. SMTP is reachable and authenticated.")
+
+
+if __name__ == "__main__":
+    main()