AuthUserFile /auth/passwd
RequireValidShell off
ScoreBoardFile /run/proftpd/scoreboard
AllowOverwrite  on
AllowStoreRestart On
AllowRetrieveRestart On
WtmpLog off
UseReverseDNS off
DefaultRoot ~

<IfModule mod_tls.c>
  TLSEngine                               on
  TLSVerifyClient                         off
  TLSRenegotiate                          none
  TLSProtocol                             TLSv1.2 TLSv1.3
  TLSOptions                              NoSessionReuseRequired AllowClientRenegotiations
  TLSRequired                             on
</IfModule>

<IfModule mod_delay.c>
  DelayOnEvent FailedLogin 5s
  DelayTable /run/proftpd/proftpd.delay
</IfModule>

<IfModule mod_deflate.c>
  DeflateEngine on
</IfModule>

<IfModule mod_sql.c>
<IfModule mod_sql_sqlite.c>
  SQLBackend sqlite3
  SQLConnectInfo /auth/ftpd.db
  SQLEngine On
  SQLAuthenticate users
  SQLAuthTypes OpenSSL Crypt
  SQLUserInfo  users userid passwd uid gid homedir shell
  SQLGroupInfo groups groupname gid members

  SQLNamedQuery last_accessed UPDATE "last_accessed = DATETIME('now') WHERE userid='%u'" users
  SQLLog PASS last_accessed
  SQLMinId 33
  SQLDefaultUID 33
  SQLDefaultGID 33

  RequireValidShell off
</IfModule>
</IfModule>

Include /etc/proftpd/custom.conf.d/