Fix mail queue and logs commands

- Hardcode paths: /usr/sbin/postqueue, /usr/sbin/postsuper, /usr/bin/journalctl
- Fix postqueue: remove -p flag (conflicts with -j)
- Add stderr logging for queue errors

backend/internal/api/handlers/queue.go

@@ -1,6 +1,7 @@
 package handlers
 
 import (
+	"log"
 	"net/http"
 
 	"github.com/imc-vibe/backend/internal/mail"
@@ -20,7 +21,8 @@ func (h *QueueHandler) List(w http.ResponseWriter, r *http.Request) {
 
 	entries, err := mail.GetQueue()
 	if err != nil {
-		Error(w, http.StatusServiceUnavailable, "mail queue tools not available")
+		log.Printf("Queue error: %v", err)
+		Error(w, http.StatusServiceUnavailable, "failed to get queue: "+err.Error())
 		return
 	}
 

backend/internal/mail/logs.go

@@ -26,7 +26,7 @@ func GetLogs(hours int, filter string) ([]LogEntry, error) {
 		"--no-pager",
 	}
 
-	cmd := exec.CommandContext(ctx, "journalctl", args...)
+	cmd := exec.CommandContext(ctx, "/usr/bin/journalctl", args...)
 	var out bytes.Buffer
 	cmd.Stdout = &out
 

backend/internal/mail/queue.go

@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"bytes"
 	"encoding/json"
+	"fmt"
 	"os/exec"
 	"regexp"
 	"strconv"
@@ -22,12 +23,15 @@ type QueueEntry struct {
 var queueLineRegex = regexp.MustCompile(`^([A-Fa-f0-9]+)\s+(\d+)\s+(\w+)\s+([A-Za-z]+\s+\d+\s+[\d:]+)\s+([^\s]+)\s+(.+)$`)
 
 func GetQueue() ([]QueueEntry, error) {
-	cmd := exec.Command("postqueue", "-p", "-j")
+	cmd := exec.Command("/usr/sbin/postqueue", "-j")
 	var out bytes.Buffer
+	var stderr bytes.Buffer
 	cmd.Stdout = &out
+	cmd.Stderr = &stderr
 
-	if err := cmd.Run(); err != nil {
+	err := cmd.Run()
-		return nil, err
+	if err != nil {
+		return nil, fmt.Errorf("/usr/sbin/postqueue -j: %v (stderr: %s)", err, stderr.String())
 	}
 
 	var entries []QueueEntry
@@ -77,7 +81,7 @@ func GetQueue() ([]QueueEntry, error) {
 }
 
 func RequeueMail(id string) error {
-	cmd := exec.Command("postqueue", "-f", "-v")
+	cmd := exec.Command("/usr/sbin/postqueue", "-f", "-v")
 	var out bytes.Buffer
 	cmd.Stdout = &out
 	cmd.Stderr = &out
@@ -89,12 +93,12 @@ func RequeueMail(id string) error {
 }
 
 func DeleteFromQueue(id string) error {
-	cmd := exec.Command("postsuper", "-d", id)
+	cmd := exec.Command("/usr/sbin/postsuper", "-d", id)
 	return cmd.Run()
 }
 
 func GetQueueCount() (int, error) {
-	cmd := exec.Command("postqueue", "-p")
+	cmd := exec.Command("/usr/sbin/postqueue", "-j")
 	var out bytes.Buffer
 	cmd.Stdout = &out