minimize capabilities

We do not need them, all mails are delivered to Dovecot over LMTP.

deploy-chatmail/src/deploy_chatmail/acmetool/__init__.py

@@ -50,8 +50,8 @@ def deploy_acmetool(nginx_hook=False, email="", domains=[]):
     systemd.service(
         name="Setup acmetool-redirector service",
         service="acmetool-redirector.service",
-        running=True,
-        enabled=True,
+        running=False,
+        enabled=False,
         restarted=service_file.changed,
     )
 

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

@@ -16,6 +16,12 @@ mail_debug = yes
 
 mail_plugins = quota
 
+# these are the capabilities Delta Chat cares about actually 
+# so let's keep the network overhead per login small
+# https://github.com/deltachat/deltachat-core-rust/blob/master/src/imap/capabilities.rs
+imap_capability = IMAP4rev1 IDLE MOVE QUOTA CONDSTORE
+
+
 # Authentication for system users.
 passdb {
   driver = dict

deploy-chatmail/src/deploy_chatmail/postfix/master.cf.j2

@@ -70,8 +70,6 @@ showq     unix  n       -       y       -       -       showq
 error     unix  -       -       y       -       -       error
 retry     unix  -       -       y       -       -       error
 discard   unix  -       -       y       -       -       discard
-local     unix  -       n       n       -       -       local
-virtual   unix  -       n       n       -       -       virtual
 lmtp      unix  -       -       y       -       -       lmtp
 anvil     unix  -       -       y       -       1       anvil
 scache    unix  -       -       y       -       1       scache