Migrate dovecot from 2.3 to 2.4

See [1] for the anouncement. Basically, all config options were renamed
or altered in some way. Brilliant.

Used [2] as a reference as official documentation lack side by side
migration examples.

[1]: https://archlinux.org/news/dovecot-24-requires-manual-intervention/
[2]: https://zunzuncito.oriole.systems/28/

1 files changed, 24 insertions, 12 deletions

diff --git a/roles/dovecot/files/dovecot.conf b/roles/dovecot/files/dovecot.conf
index 3271cbd..4c59141 100644
--- a/roles/dovecot/files/dovecot.conf
+++ b/roles/dovecot/files/dovecot.conf
@@ -1,15 +1,23 @@
+# Freeze configuration syntax.
+dovecot_config_version = 2.4.0
+
+# Freeze storage file format version.
+dovecot_storage_version = 2.4.0
+
 # Protocols we want to be serving.
 protocols = imap pop3 lmtp
 
 # Path to the mail directory.
-mail_location = maildir:/var/mail/%d/%n/Maildir
+mail_home = /var/mail/%{user | domain}/%{user | username}
+mail_path = ~/Maildir
+mail_driver = maildir
 
 # Path to SSL certificate files.
-ssl_cert = </etc/letsencrypt/live/mail.ilvokhin.com/fullchain.pem
-ssl_key = </etc/letsencrypt/live/mail.ilvokhin.com/privkey.pem
+ssl_server_cert_file = /etc/letsencrypt/live/mail.ilvokhin.com/fullchain.pem
+ssl_server_key_file = /etc/letsencrypt/live/mail.ilvokhin.com/privkey.pem
 
 # Disable plaintext authentication, only SSL is allowed.
-disable_plaintext_auth = yes
+auth_allow_cleartext = no
 
 service auth {
     # Postfix smtp-auth.
@@ -42,7 +50,7 @@ service pop3-login {
     }
 }
 
-namespace {
+namespace inbox {
     inbox = yes
     separator = /
 
@@ -69,14 +77,18 @@ namespace {
 }
 
 # Use separate passwd file for storing passwords.
-passdb {
-    driver = passwd-file
-    args = scheme=SHA512-CRYPT username_format=%u /etc/dovecot/passwd
+passdb passwd-file {
+    default_password_scheme = SHA512-CRYPT
+    auth_username_format = %{user}
+    passwd_file_path = /etc/dovecot/passwd
 }
 
 # Use the same separate passwd file for user lookup.
-userdb {
-    driver = passwd-file
-    args = username_format=%u /etc/dovecot/passwd
-    override_fields = uid=vmail gid=vmail
+userdb static {
+    auth_username_format = %{user}
+    passwd_file_path = /etc/dovecot/passwd
+    fields {
+        uid = vmail
+        gid = vmail
+    }
 }