Back to utf8mb4...

data/conf/mysql/my.cnf

@@ -1,14 +1,14 @@
 [mysqld]
 character-set-client-handshake = FALSE
-character-set-server           = utf8
-collation-server               = utf8_unicode_ci
-#innodb_file_per_table          = TRUE
-#innodb_file_format             = barracuda
-#innodb_large_prefix            = TRUE
+character-set-server           = utf8mb4
+collation-server               = utf8mb4_unicode_ci
+innodb_file_per_table          = TRUE
+innodb_file_format             = barracuda
+innodb_large_prefix            = TRUE
 #sql_mode=IGNORE_SPACE,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
 
 [client]
-default-character-set = utf8
+default-character-set = utf8mb4
 
 [mysql]
-default-character-set = utf8
+default-character-set = utf8mb4

data/conf/sogo/sogo.conf

@@ -54,6 +54,7 @@
     SOGoTrashFolderName = "Trash";
     SOGoVacationEnabled = YES;
 
+    MySQL4Encoding = "utf8mb4";
   //SOGoDebugRequests = YES;
   //SoDebugBaseURL = YES;
   //ImapDebugEnabled = YES;