too many unacked stazas (policy violation)

[yajo10]

Environment

• ejabberd version: 18.06
• Erlang version: Erlang (SMP,ASYNC_THREADS) (BEAM) emulator version 8.2.1
• OS: Raspbian
• Installed from: official binary installer

Errors from ejabberd.log
2018-09-25 17:35:18.618 [info] <0.15743.0>@ejabberd_c2s:process_terminated:270 (tls|<0.15743.0>) Closing c2s session for xxxx@xxxx.net/phone: Stream closed by us: Too many unacked stanzas (policy-violation)
2018-09-25 17:35:10.532 [info] <0.15743.0>@ejabberd_c2s:bind:402 (tls|<0.15743.0>) Opened c2s session for xxxx@xxxx.net/phone
2018-09-25 17:35:10.259 [info] <0.15743.0>@ejabberd_c2s:handle_auth_success:433 (tls|<0.15743.0>) Accepted c2s SCRAM-SHA-1 authentication for xxxx@xxxx.net by sql backend from ::ffff:xxx.xxx.xxx.xxx
2018-09-25 17:35:07.121 [info] <0.1282.0>@ejabberd_listener🉑272 (<0.15743.0>) Accepted connection ::ffff:xxx.xxx.xxx.xxx:xxxxx -> ::ffff:xxx.xxx.xxx.xxx:5222

Description:
I have a problem connecting my device to my server. All other deivces work very well. I don't know what happened, but I'm getting always this error. My mobile client and gajim are always first saying connection successfull but than printing an error. How could I remove stanza for using the account anymore?
Thank's in advance
yajo10

[licaon-kter]

What mobile client? What happens if you remove "policy" limitation?

[yajo10]

Pix-Art Messenger. It's a fork of Conversations with modified ui. But it also happens in Gajim. How could I remove this?

[zinid]

How could I remove this?

It's max_ack_queue option of mod_stream_mgmt. But the default is rather big already: 5000 stanzas. Try to set it to 10000 anyway, maybe it will help, I don't know.

[yajo10]

Thank's. This solved it. I had it on 70, but I don't know anymore, why I did this....

[lock]

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