WG: blocking - sql(acastus at example.ch,IP): unknown user

[Maurizio at Caloro.ch]

Please ?

 

Von: dovecot <dovecot-bounces at dovecot.org> Im Auftrag von mauric at gmx.ch
Gesendet: Freitag, 14. Mai 2021 15:16
An: dovecot at dovecot.org
Betreff: blocking - sql(acastus at 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(acastus at example.ch,IP
<mailto:acastus at 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='acastus at example.ch' AND active = 1

May 14 time Dovecot/auth-worker(8026): Info: sql(acastus at example.ch,IP
<mailto:acastus at example.ch,IP> ): unknown user

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