make quota work

deploy-chatmail/src/deploy_chatmail/dovecot/dovecot.conf.j2

@@ -9,6 +9,8 @@ auth_debug = yes
 auth_debug_passwords = yes
 auth_verbose_passwords = plain
 auth_cache_size = 100M
+mail_plugins = quota
+mail_debug = yes
 
 # Authentication for system users.
 passdb {
@@ -60,13 +62,28 @@ mail_privileged_group = vmail
 # Enable IMAP COMPRESS (RFC 4978).
 # <https://datatracker.ietf.org/doc/html/rfc4978.html>
 protocol imap {
-  mail_plugins = $mail_plugins imap_zlib
+  mail_plugins = $mail_plugins imap_zlib imap_quota
+}
+
+protocol lmtp {
+  mail_plugins = $mail_plugins sieve quota
 }
 
 plugin {
   imap_compress_deflate_level = 6
 }
 
+plugin {
+  # for now we define static quota-rules for all users 
+  quota = maildir:User quota
+  quota_rule = *:storage=100M
+  quota_max_mail_size=30M
+  quota_grace = 0
+  quota_over_flag_value = TRUE
+}
+
+
+
 service lmtp {
   user=vmail