diff --git a/podkop/files/usr/bin/podkop b/podkop/files/usr/bin/podkop
index db88742..99a1eeb 100755
--- a/podkop/files/usr/bin/podkop
+++ b/podkop/files/usr/bin/podkop
@@ -2212,30 +2212,45 @@ check_dns_available() {
 
     if [ "$dns_type" = "doh" ]; then
         # Generate random DNS query ID (2 bytes)
-        local random_id=$(head -c2 /dev/urandom | hexdump -ve '1/1 "%.2x"')
-        # Create DNS wire format query for google.com A record with random ID
-        local dns_query=$(printf "\x${random_id:0:2}\x${random_id:2:2}\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x03www\x06google\x03com\x00\x00\x01\x00\x01" | base64)
-        
-        # Try POST method first (RFC 8484 compliant)
-        local result=$(echo "$dns_query" | base64 -d | curl -H "Content-Type: application/dns-message" \
-            -H "Accept: application/dns-message" \
-            --data-binary @- \
-            --connect-timeout 5 -s \
-            "https://$dns_server/dns-query" 2>/dev/null)
-        
-        if [ $? -eq 0 ] && [ -n "$result" ]; then
-            is_available=1
-            status="available"
+        local random_id=$(head -c2 /dev/urandom | hexdump -ve '1/1 "%.2x"' 2>/dev/null)
+        if [ $? -ne 0 ]; then
+            error_message="Failed to generate random ID"
+            status="internal error"
         else
-            # Try GET method as fallback, remove padding from base64
-            local dns_query_no_padding=$(echo "$dns_query" | tr -d '=')
-            result=$(curl -H "accept: application/dns-message" \
-                --connect-timeout 5 -s \
-                "https://$dns_server/dns-query?dns=$dns_query_no_padding" 2>/dev/null)
-            
-            if [ $? -eq 0 ] && [ -n "$result" ]; then
-                is_available=1
-                status="available"
+            # Create DNS wire format query for google.com A record with random ID
+            local dns_query=$(printf "\x${random_id:0:2}\x${random_id:2:2}\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x03www\x06google\x03com\x00\x00\x01\x00\x01" | base64 2>/dev/null)
+            if [ $? -ne 0 ]; then
+                error_message="Failed to generate DNS query"
+                status="internal error"
+            else
+                # Try POST method first (RFC 8484 compliant) with shorter timeout
+                local result=$(echo "$dns_query" | base64 -d 2>/dev/null | curl -H "Content-Type: application/dns-message" \
+                    -H "Accept: application/dns-message" \
+                    --data-binary @- \
+                    --max-time 2 \
+                    --connect-timeout 1 \
+                    -s \
+                    "https://$dns_server/dns-query" 2>/dev/null)
+                
+                if [ $? -eq 0 ] && [ -n "$result" ]; then
+                    is_available=1
+                    status="available"
+                else
+                    # Try GET method as fallback with shorter timeout
+                    local dns_query_no_padding=$(echo "$dns_query" | tr -d '=' 2>/dev/null)
+                    result=$(curl -H "accept: application/dns-message" \
+                        --max-time 2 \
+                        --connect-timeout 1 \
+                        -s \
+                        "https://$dns_server/dns-query?dns=$dns_query_no_padding" 2>/dev/null)
+                    
+                    if [ $? -eq 0 ] && [ -n "$result" ]; then
+                        is_available=1
+                        status="available"
+                    else
+                        error_message="DoH server not responding"
+                    fi
+                fi
             fi
         fi
     elif [ "$dns_type" = "dot" ]; then