fix : test email : more detail

EMAIL_BLOCKING_DIAGNOSTIC.md

@@ -84,11 +84,52 @@ This endpoint requires **Admin authentication**. Make sure you're authenticated
 
 If the domain is not blocked but emails still aren't arriving:
 
-1. Check the sender's email server logs
-2. Check WildDuck server logs
-3. Verify DNS/MX records for both domains
-4. Check if there are any forwarding rules
-5. Verify the recipient's email quota isn't exceeded
+### Step 1: Check WildDuck Server Logs
+Look for SMTP rejection messages, connection attempts, or errors related to the sender domain:
+```bash
+# Check WildDuck logs for SMTP rejections
+grep -i "metixco.ae" /var/log/wildduck/*.log
+grep -i "r.sadat@humapek.co" /var/log/wildduck/*.log
+```
+
+### Step 2: Verify DNS/MX Records
+Check that the recipient domain has correct MX records:
+```bash
+dig MX humapek.co
+nslookup -type=MX humapek.co
+```
+
+### Step 3: Check Sender's Email Server
+Ask the sender to:
+- Check their email server logs for delivery attempts
+- Look for bounce messages or error codes
+- Verify the email address is correct: `r.sadat@humapek.co`
+
+### Step 4: Verify SPF/DKIM/DMARC Records
+Check email authentication records:
+```bash
+# Check SPF record for sender domain
+dig TXT metixco.ae | grep -i spf
+
+# Check DMARC record
+dig TXT _dmarc.metixco.ae
+```
+
+### Step 5: Test with Allowlist
+Try adding the domain to allowlist as a test:
+```bash
+POST /email-blocking/allowlist
+{
+  "recipientEmail": "r.sadat@humapek.co",
+  "senderDomain": "metixco.ae",
+  "description": "Test allowlist for troubleshooting"
+}
+```
+
+### Step 6: Check Firewall/Network
+- Verify sender's IP is not blocked by firewall
+- Check if there are any network-level restrictions
+- Ensure SMTP port (usually 25, 587, or 465) is open
 
 ## Example: Fix the Current Issue