Yes, my explanation was very limited. I am using a kamailio server and an Asterisk server . The extensions are registered in kamailio but the calls go to the Asterisk server. My kamailio server uses two IPs (public and local) , i use multi homed . My database is on another server. I am using version 5.4.4 of kamailio server and database . I put kamailio in subs_db_mode 3 and debug mode 3 and I do not receive any errors. publish packet are sent but no notify messages are sent to the subscribers . but i change database to local ,Everything is fine and Notify packets are sent. # ----- presence params ----- modparam("presence", "db_url", DBURL) modparam("presence", "db_update_period", 20) modparam("presence", "server_address", "sip:test.test.com:5080") modparam("presence", "send_fast_notify", 0) modparam("presence", "db_update_period", 20) modparam("presence", "clean_period", 40) modparam("presence", "subs_db_mode", 3) modparam("presence", "fetch_rows", 1000) modparam("presence", "db_table_lock_type", 0) # ----- presence_xml params ----- modparam("presence_xml", "db_url", DBURL) modparam("presence_xml", "force_active", 1) # ----- presence_dialoginfo params ----- modparam("presence_dialoginfo", "force_single_dialog", 0) # ----- pua params ----- modparam("pua", "db_url", DBURL) modparam("pua", "db_mode", 2) modparam("pua", "update_period", 60) modparam("pua", "dlginfo_increase_version", 0) modparam("pua", "reginfo_increase_version", 0) modparam("pua", "check_remote_contact", 1) modparam("pua", "fetch_rows", 1000) # ----- pua_dialoginfo params ----- modparam("pua_dialoginfo", "include_callid", 1) modparam("pua_dialoginfo", "send_publish_flag", FLT_DLGINFO) modparam("pua_dialoginfo", "caller_confirmed", 0) modparam("pua_dialoginfo", "include_tags", 1) modparam("pua_dialoginfo", "override_lifetime", 124) # ----- pua_reginfo params ----- modparam("pua_reginfo", "default_domain", "test.test:5080") modparam("pua_reginfo", "server_address", "test.test:5080") #!endif # ----- dialog params ----- modparam("dialog", "db_url", DBURL) modparam("dialog", "enable_stats", 1) modparam("dialog", "db_mode", 1) modparam("dialog", "dlg_flag", FLT_DLG) On Tue, Jun 1, 2021 at 11:19 AM Henning Westerholt <hw(a)skalatan.de> wrote: