Hi, > could you please supply corresponding logs?
Here is the crash dump: 2018-04-14 19:50:16 =CRASH REPORT==== crasher: initial call: pgsql_proto:init/1 pid: <0.516.0> registered_name: [] exception exit: {{init,{error,nxdomain}},[{gen_server,init_it,6,[{file,"gen_server.erl"},{line,344}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,247}]}]} ancestors: [<0.481.0>,'ejabberd_sql_sup_mercurius.teckids.org',ejabberd_rdbms,ejabberd_sup,<0.62.0>] messages: [] links: [] dictionary: [] trap_exit: false status: running heap_size: 610 stack_size: 27 reductions: 349 neighbours: Error log: 2018-04-14 19:52:06.522 [error] <0.648.0>@eldap:connect_bind:1083 LDAP connection failed: ** Server: db.teckids.org:636 ** Reason: nxdomain ** Socket options: [{packet,asn1},{active,true},{keepalive,true},binary] ejabberd.log has nothing different. > Also, have you tried configuring IPv6 addresses directly instead of AAAA > records to rule out wonky DNS? See my initial report ;). Putting an IPv6 address leads to the same error, and ejabberd even seems to try to resolve it via a DNS forward query because with an IPv6 address, the error also is nxdomain. -nik
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