# Upgrade iRedMail from 0.9.2 to 0.9.3

[TOC]

__This is still a DRAFT document, do NOT apply it.__

## ChangeLog

> We provide remote upgrade service, check [the price](../support.html) and [contact us](../contact.html).

* 2015-06-09: [OPTIONAL] Fixed: Not preserve the case of ${extension} while delivering message to mailbox.

## General (All backends should apply these steps)

### Update `/etc/iredmail-release` with new iRedMail version number

iRedMail stores the release version in `/etc/iredmail-release` after
installation, it's recommended to update this file after you upgraded iRedMail,
so that you can know which version of iRedMail you're running. For example:

```
# File: /etc/iredmail-release

0.9.3
```

### Upgrade iRedAPD (Postfix policy server) to the latest 1.7.0

Please follow below tutorial to upgrade iRedAPD to the latest stable release:
[How to upgrade iRedAPD-1.4.0 or later versions to the latest stable release](./upgrade.iredapd.html)

Detailed release notes are available here: [iRedAPD release notes](./iredapd.releases.html).

### [OPTIONAL] Fixed: Not preserve the case of `${extension}` while delivering message to mailbox

With iRedMail-0.9.2 and earlier releases, email sent to user
`username+Ext@domain.com` (upper case `E`) will be delivered to folder
`ext` (lower case `e`) of `username@domain.com`'s mailbox. This fix will
preserve the case of address extension.

* Open file `/etc/postfix/master.cf` (Linux/OpenBSD) or
  `/usr/local/etc/postfix/master.cf` (FreeBSD), find below lines:

```
# Use dovecot deliver program as LDA.
dovecot unix    -       n       n       -       -      pipe
    flags=DRhu ...
```

* Replace `flags=DRhu` by `flags=DRh` (remove `u`) in the third line:

```
    flags=DRh ...
```

* Save your change and restart Postfix service.