if ($mf_sn<1) $mf_sn=0;
if (!isset($mf_server)) return;
setPref($data_dir,$username,"mailfetch_server_$mf_sn", (isset($mf_server)?$mf_server:""));
setPref($data_dir,$username,"mailfetch_port_$mf_sn", (isset($mf_port)?$mf_port:110));
setPref($data_dir,$username,"mailfetch_alias_$mf_sn", (isset($mf_alias)?$mf_alias:""));
setPref($data_dir,$username,"mailfetch_user_$mf_sn",(isset($mf_user)?$mf_user:""));
if ($mf_sn<1) $mf_sn=0;
if (!isset($mf_server)) return;
setPref($data_dir,$username,"mailfetch_server_$mf_sn", (isset($mf_server)?$mf_server:""));
setPref($data_dir,$username,"mailfetch_port_$mf_sn", (isset($mf_port)?$mf_port:110));
setPref($data_dir,$username,"mailfetch_alias_$mf_sn", (isset($mf_alias)?$mf_alias:""));
setPref($data_dir,$username,"mailfetch_user_$mf_sn",(isset($mf_user)?$mf_user:""));