<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=DE-CH link="#0563C1" vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>Please ?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=DE style='mso-fareast-language:DE-CH'>Von:</span></b><span lang=DE style='mso-fareast-language:DE-CH'> dovecot <dovecot-bounces@dovecot.org> <b>Im Auftrag von </b>mauric@gmx.ch<br><b>Gesendet:</b> Freitag, 14. Mai 2021 15:16<br><b>An:</b> dovecot@dovecot.org<br><b>Betreff:</b> blocking - sql(acastus@example.ch,IP): unknown user<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-GB>hello<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>running with following Setup booster, postfix, Dovecot, mysql and meny other nice tools<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>searching for solutions I see meny other running with same questions like this, <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>so please what i need to read or setup that i don’t receive so many failed logon try? “unknown user"<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>i see, meny “fix” this fail2ban, but iam shure that Dovecot has also any solution for this? so friendly<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>asking how to close this request from trying for failed logon.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>May 14 time Dovecot/auth-worker(8075): Debug: Loading modules from directory: /usr/lib/dovecot/modules/auth<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>May 14 time Dovecot/auth-worker(8075): Debug: Module loaded: /usr/lib/dovecot/modules/auth/lib20_auth_var_expand_crypt.so<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>May 14 time Dovecot/auth-worker(8075): Debug: Module loaded: /usr/lib/dovecot/modules/auth/libdriver_mysql.so<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>May 14 time Dovecot/auth-worker(8043): Debug: sql(<a href="mailto:acastus@example.ch,IP">acastus@example.ch,IP</a>): 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@example.ch' AND active = 1<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>May 14 time Dovecot/auth-worker(8026): Info: sql(<a href="mailto:acastus@example.ch,IP">acastus@example.ch,IP</a>): unknown user<o:p></o:p></span></p></div></body></html>