# Mail Delivery Problems — server.konoba.hr (91.98.172.231)

**Datum:** 14. April 2026  
**Server:** server.konoba.hr (91.98.172.231)  
**Mail adresa:** info@konoba.hr

---

## Bounce #1: tin.francekovic@monri.com

**Queue ID:** AD1D41FD57  
**Error:** SMTP 550 5.7.1  
**Razlog:** IP na **Trend Micro ERS-DUL** blocklisti

```
Mail from <91.98.172.231> was refused due to sender IP found in ERS-DUL
```

**ERS-DUL** = lista "dynamic/residential" IP raspona koji ne bi trebali slati mail direktno.

### Log (skraćeno)

```
16:42:56 - Auth OK, DKIM potpis dodan
16:42:57 - asseco.in.tmes.trendmicro.eu odbio: 550 5.7.1 IP on ERS-DUL
```

✅ Autentikacija, DKIM, SMTP konekcija - sve OK  
❌ Odbijeno zbog IP reputacije (ERS-DUL blocklista)

---

## Bounce #2: daviddaria2709@icloud.com

**Queue ID:** 7BEC81FD3A  
**Error:** SMTP 550 5.1.1  
**Razlog:** User ne postoji

```
550 5.1.1 <daviddaria2709@icloud.com>: user does not exist
```

✅ iCloud prihvatio SMTP konekciju  
✅ Mail server radi OK  
❌ Email adresa ne postoji (typo ili obrisan račun)

---

## DNS & Mail Config

| Item | Status |
|---|---|
| **PTR/rDNS** | ✅ server.konoba.hr |
| **SPF** | ✅ `v=spf1 a mx ip4:91.98.172.231 -all` |
| **DKIM signing** | ✅ OpenDKIM aktivan |
| **DKIM DNS record** | ✅ Dodan u Cloudflare (14.04.2026) |
| **DMARC** | ✅ `p=quarantine; adkim=s; aspf=s` |
| **Spamhaus ZEN** | ❌ Listed (DNS javno dostupan) → **RIJEŠENO 14.04.2026 22:44** |
| **Trend Micro ERS-DUL** | ❌ Listed |

---

## Blacklist Status (14.04.2026)

```
❌ Spamhaus ZEN (SBL/XBL/PBL) - DNS open resolver → RIJEŠENO
✅ SpamCop - Clean
✅ SORBS - Clean  
✅ Barracuda - Clean
❌ Trend Micro ERS-DUL - "Dynamic/residential" range
```

---

## Testiranje

### Mail-Tester.com
```bash
php artisan tinker --execute="Mail::raw('Test', function(\$m) { \$m->to('test@mail-tester.com')->subject('Test'); });"
```
Otvo ri https://www.mail-tester.com/ i check score (cilj: 8/10+)

### Blacklist Check
- **Spamhaus:** https://www.spamhaus.org/lookup/ → Unesi 91.98.172.231
- **MXToolbox:** https://mxtoolbox.com/SuperTool.aspx → Blacklist Check
- **MultiRBL:** https://multirbl.valli.org/ → 300+ RBL provjera

---

## Action Items

| Prioritet | Task | Status |
|---|---|---|
| 1 | DKIM DNS record u Cloudflare | ✅ **GOTOVO** (14.04.2026) |
| 2 | Ograničiti BIND na localhost | ✅ **GOTOVO** (14.04.2026 22:44) |
| 3 | Spamhaus delisting | ⏳ Čekaj 24-48h, pa https://www.spamhaus.org/lookup/ |
| 4 | Trend Micro ERS-DUL delisting | ❌ https://servicecentral.trendmicro.com/en-US/ers/ |
| 5 | Test mail-tester.com | ⏳ Nakon 24-48h |

### Delisting Upute

**Trend Micro ERS-DUL:**
1. https://servicecentral.trendmicro.com/en-US/ers/
2. Unesi IP: 91.98.172.231
3. Submit delisting request - dokaz: PTR, SPF, DKIM, dedicated server

**SMTP Relay opcija (ako delisting ne uspije):**
- SendGrid (100/dan besplatno)
- Amazon SES ($0.10/1000)
- Mailgun (5000/mj besplatno)

---

**Server:** server.konoba.hr (91.98.172.231) | **DNS:** Cloudflare | **Hosting:** Hetzner vServer