diff --git a/postfix.changes b/postfix.changes
index 36f2993..64ee973 100644
--- a/postfix.changes
+++ b/postfix.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Mar 20 18:01:36 CET 2017 - kukuk@suse.de
+
+- Require system group mail
+- Use mail group name instead of GID
+
 -------------------------------------------------------------------
 Mon Mar  6 21:27:38 UTC 2017 - mrueckert@suse.de
 
diff --git a/postfix.spec b/postfix.spec
index 4a893c0..561014a 100644
--- a/postfix.spec
+++ b/postfix.spec
@@ -42,7 +42,7 @@
 %define pf_uid               51
 %define pf_gid               51
 %define maildrop_gid         59
-%define mail_gid	     12
+%define mail_group	     mail
 %define conf_backup_dir      %{_localstatedir}/adm/backup/%{name}
 %define omc_pdir             %{_datadir}/omc/
 %define omc_dir              %{_datadir}/omc/svcinfo.d/
@@ -107,6 +107,9 @@ Requires(pre):  sysvinit(syslog)
 %if 0%{?suse_version} >= 1100
 BuildRequires:  fdupes
 %endif
+%if 0%{?suse_version} >= 1330
+Requires(pre):  group(%{mail_group})
+%endif
 %if 0%{?suse_version} > 1210
 BuildRequires:  systemd
 %{?systemd_requires}
@@ -247,7 +250,7 @@ make
 groupadd -g %{pf_gid} -o -r %{name} 2> /dev/null || :
 groupadd -g %{maildrop_gid} -o -r maildrop 2> /dev/null || :
 useradd -r -o -g %{name} -u %{pf_uid} -s /bin/false -c "Postfix Daemon" -d /%{pf_queue_directory} %{name} 2> /dev/null || :
-usermod -G %{maildrop_gid},%{mail_gid} %{name} 2> /dev/null || :
+usermod -G %{maildrop_gid},%{mail_group} %{name} 2> /dev/null || :
 mkdir -p %{buildroot}/%{_libdir}
 mkdir -p %{buildroot}/etc/postfix
 cp conf/* %{buildroot}/etc/postfix/
@@ -401,7 +404,7 @@ fi
 getent group %{name} >/dev/null || groupadd -g %{pf_gid} -o -r %{name}
 getent group maildrop >/dev/null || groupadd -g %{maildrop_gid} -o -r maildrop
 getent passwd %{name} >/dev/null || useradd -r -o -g %{name} -u %{pf_uid} -s /bin/false -c "Postfix Daemon" -d /%{pf_queue_directory} %{name}
-usermod -G %{maildrop_gid},%{mail_gid} %{name}
+usermod -G %{maildrop_gid},%{mail_group} %{name}
 # ---------------------------------------------------------------------------
 
 %pre mysql