I started to get the same thing on my Rspamd -
6/13/2022, 10:15:35 PM controller 1584 csession d64ff0 got error on IO with server localhost:11335([::1]:11335), on read, 111, Connection refused 6/13/2022, 10:15:25 PM controller 1584 csession 798c02 got error on IO with server localhost:11335([::1]:11335), on read, 111, Connection refused 6/13/2022, 8:14:44 PM rspamd_proxy 1583 proxy 13c42c got error on IO with server localhost:11335([::1]:11335), on write, 111, Connection refused 6/13/2022, 8:11:29 PM rspamd_proxy 1583 proxy 579eba got error on IO with server localhost:11335([::1]:11335), on write, 111, Connection refused
I did start reconfiguring my Rspamd today… It must have been the settings I had changed.
I enabled greylisting and set it to 3 in Email>Filter. I just disabled it and then the above items went away from Rspamd errors.
I don’t know if this is the same issue your having or if mine is different. You can check your settings to see.
Can you send me a link to the information for setting Filters in NethServer.
Thanks - and I hope this helps you as well.
Jeff