...

how to disable throttling (or better - put other limits) for 127.0.0.1?

https://wiki2.dovecot.org/Upgrading/2.3 - look for "Localhost Auth Penalty"

that's certainly this.

but i am not an expert in this passdb system

my current config is

passdb { driver=passwd-file args= username_format=%Lu /usr/local/etc/dovecot/aliasy }

passdb { driver = pam

[session=yes] [setcred=yes] [failure_show_msg=yes] [max_requests=<n>]

[cache_key=<key>] [<service name>]

#args = dovecot }

userdb {

<doc/wiki/AuthDatabase.Passwd.txt>

driver = passwd

[blocking=no]

#args =

Override fields from passwd

#override_fields = home=/home/virtual/%u }

where /usr/local/etc/dovecot/aliasy is a list of e-mail names to user account names like this

wojtek@puchar.net:::::::user=puchar-wojtek

how to properly do this?