mail_crypt is not enabled by default

data/conf/dovecot/dovecot.conf

@@ -239,9 +239,9 @@ plugin {
   sieve_max_script_size = 1M
   sieve_quota_max_scripts = 0
   sieve_quota_max_storage = 0
-  mail_crypt_global_private_key = </mail_crypt/ecprivkey.pem
-  mail_crypt_global_public_key = </mail_crypt/ecpubkey.pem
-  mail_crypt_save_version = 2
+  #mail_crypt_global_private_key = </mail_crypt/ecprivkey.pem
+  #mail_crypt_global_public_key = </mail_crypt/ecpubkey.pem
+  #mail_crypt_save_version = 2
 }
 dict {
   sqlquota = mysql:/usr/local/etc/dovecot/sql/dovecot-dict-sql.conf