> On 19/05/2021 17:38 mauri...@caloro.ch wrote:
>
>
> Please ?
>
> Von:dovecot <dovecot-boun...@dovecot.org> Im Auftrag vonmau...@gmx.ch
> Gesendet: Freitag, 14. Mai 2021 15:16
> An: dovecot@dovecot.org
> Betreff: blocking - sql(acas...@example.ch,IP): unknown user
>
> hello
> running with following Setup booster, postfix, Dovecot, mysql and meny other
> nice tools
> searching for solutions I see meny other running with same questions like
> this,
>
> so please what i need to read or setup that i don’t receive so many failed
> logon try? “unknown user"
>
> i see, meny “fix” this fail2ban, but iam shure that Dovecot has also any
> solution for this? so friendly
> asking how to close this request from trying for failed logon.
>
> May 14 time Dovecot/auth-worker(8075): Debug: Loading modules from directory:
> /usr/lib/dovecot/modules/auth
> May 14 time Dovecot/auth-worker(8075): Debug: Module loaded:
> /usr/lib/dovecot/modules/auth/lib20_auth_var_expand_crypt.so
> May 14 time Dovecot/auth-worker(8075): Debug: Module loaded:
> /usr/lib/dovecot/modules/auth/libdriver_mysql.so
> May 14 time Dovecot/auth-worker(8043): Debug: sql(acas...@example.ch,IP):
> query: SELECT username AS user, password, '/folder/example.ch/acastus' AS
> userdb_home, '10000' AS userdb_uid, '10000' AS userdb_gid,
> CONCAT('maildir:storage=', (quota*1024)) as userdb_quota FROM mailbox WHERE
> username='acas...@example.ch' AND active = 1
> May 14 time Dovecot/auth-worker(8026): Info: sql(acas...@example.ch,IP):
> unknown user
Hi!
You can try auth_policy_server such as weakforced. See
https://github.com/PowerDNS/weakforced and
https://doc.dovecot.org/configuration_manual/authentication/auth_policy/#authentication-auth-policy
Aki
