diff --git a/install-update-srs.sh b/install-update-srs.sh
index 3de993f..419b97b 100755
--- a/install-update-srs.sh
+++ b/install-update-srs.sh
@@ -232,8 +232,19 @@ read_config_domain_hint() {
 # First user interaction, before any installation/prerequisite checks.
 # The shared Git script never has a server-specific domain hardcoded.
 prompt_srs_domain() {
-   local answer=''
+   local answer='' host_fqdn=''
    read_config_domain_hint
+
+   # For a first installation, suggest srs.<hostname -f>.
+   # A configured SRS domain always takes precedence.
+   if [[ -z "$CONFIG_DOMAIN_HINT" ]]; then
+      host_fqdn="$(hostname -f 2>/dev/null || true)"
+      host_fqdn="${host_fqdn,,}"
+      if [[ "$host_fqdn" =~ ^([a-z0-9]([a-z0-9-]{0,61}[a-z0-9])?[.])+[a-z]{2,63}$ ]] &&
+         (( ${#host_fqdn} <= 249 )); then
+         CONFIG_DOMAIN_HINT="srs.${host_fqdn}"
+      fi
+   fi
    echo
    echo 'Selective SRS - domain selection'
    echo