# Trend Micro ERS-DUL Delisting Guide

**IP za delisting:** 91.98.172.231  
**Razlog blockanja:** IP kategoriziran kao "dynamic/residential" range

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## Koraci za Delisting

### 1. Otvori Trend Micro Portal
https://servicecentral.trendmicro.com/en-US/ers/

### 2. Login/Register (ako treba)

### 3. IP Reputation Check
- Unesi IP: **91.98.172.231**
- Klikni "Check Reputation"
- Status: Listed on ERS-DUL

### 4. Submit Delisting Request
Klikni na "Request Delisting" ili "Submit Ticket"

---

## Template za Request

**Subject:**  
Request to Remove IP 91.98.172.231 from ERS-DUL List

**Message:**

```
Hello Trend Micro Team,

I am requesting the removal of IP address 91.98.172.231 from the ERS-DUL blocklist.

This IP is used for a dedicated legitimate mail server:

Server Information:
- IP: 91.98.172.231
- Hostname: server.konoba.hr
- PTR (rDNS): server.konoba.hr (verified)
- Domain: konoba.hr
- Sending address: info@konoba.hr
- Purpose: Business email for restaurant/hospitality

Email Authentication:
- SPF: v=spf1 a mx ip4:91.98.172.231 -all (passing)
- DKIM: Configured with valid signature (default._domainkey.konoba.hr)
- DMARC: Policy active (p=quarantine)
- TLS: Enabled

Server Details:
- Hosting: Hetzner vServer (dedicated server, NOT residential/dynamic)
- Control Panel: CWP Pro
- MTA: Postfix 3.5.25
- All outbound mail is authenticated via SASL

This is a properly configured dedicated mail server. We do not send spam or unsolicited email.
All mail is legitimate business correspondence (customer inquiries, reservations, confirmations).

Recently, email to tin.francekovic@monri.com was rejected:
"550 5.7.1 Mail from <91.98.172.231> was refused due to sender IP found in ERS-DUL"

Please review and remove this IP from the ERS-DUL list.

Thank you.

Best regards,
[Tvoje ime]
[Tvoj email za kontakt]
```

---

## Očekivani Timeline

- **Submit:** Odmah
- **Initial Response:** 24-48h
- **Review Process:** 3-7 dana
- **Decision:** Approved ili Denied

---

## Ako se Deny-a

**Plan B: SMTP Relay**

### SendGrid (100 emailova/dan besplatno)

1. Register: https://sendgrid.com/
2. Settings → API Keys → Create API Key
3. Copy API key
4. Laravel `.env`:
```
MAIL_MAILER=smtp
MAIL_HOST=smtp.sendgrid.net
MAIL_PORT=587
MAIL_USERNAME=apikey
MAIL_PASSWORD=<sendgrid_api_key>
MAIL_ENCRYPTION=tls
MAIL_FROM_ADDRESS=info@konoba.hr
```
5. SendGrid → Sender Authentication → Verify: info@konoba.hr

**Test:**
```bash
php artisan tinker --execute="Mail::raw('Test via SendGrid', function(\$m) { \$m->to('tvoj@email.com')->subject('Test'); });"
```

---

**Kreiran:** 14.04.2026  
**Status:** Čeka delisting request od korisnika