# Upgrade SOGo from v4 to v5

!!! attention

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[TOC]

SOGo v5 was released on Aug 10, 2020 by the SOGo team (<https://sogo.nu>), and
nightly build packages for v4 and v4 were removed permanently. All users must
switch to v5 as soon as possible.

## Upgrade SOGo On RHEL/CentOS

* Backup config files first:

```
mkdir -p /root/sogo-backup/{sogo,sysconfig}
cp /etc/sogo/* /root/sogo-backup/sogo/
cp /etc/sysconfig/sogo /root/sogo-backup/sysconfig/
```

* Backup its SQL database:

```
bash /var/vmail/backup/backup_*sql.sh
bash /var/vmail/backup/backup_sogo.sh
```

* Open file `/etc/yum.repos.d/sogo.repo`, change the version number in
  `baseurl=` line from `4` to `5`:

```
baseurl=https://packages.inverse.ca/SOGo/nightly/5/rhel/$releasever/$basearch/
```

* SOGo relies on the GNUstep packages provided by SOGo team, and must not use
  the packages from EPEL repo. Please open file `/etc/yum.repos.d/epel.repo`,
  make sure you have line like below:

```
exclude=gnustep*
```

* Upgrade SOGo packages:

```
yum clean all
yum update 'sogo*' '*sope*'
```

* Update config file `/etc/sogo/sogo.conf`, enable TLS without verifying ssl cert.

```
    SOGoSMTPServer = "smtp://127.0.0.1:587/?tls=YES&tlsVerifyMode=allowInsecureLocalhost";
    SOGoMailingMechanism = smtp;
    SOGoSMTPAuthenticationType = PLAIN;

    SOGoSieveServer = "sieve://127.0.0.1:4190/?tls=YES&tlsVerifyMode=allowInsecureLocalhost";
```

* Restart SOGo and memcached services:

```
service memcached restart
service sogod restart
```

## Upgrade SOGo On Debian/Ubuntu

* Backup config files first:

```
mkdir -p /root/sogo-backup/{sogo,default}
cp /etc/sogo/* /root/sogo-backup/sogo/
cp /etc/default/sogo /root/sogo-backup/default/
```

* Backup its SQL database:

```
bash /var/vmail/backup/backup_*sql.sh
bash /var/vmail/backup/backup_sogo.sh
```

* Open file `/etc/apt/sources.list` or `/etc/apt/sources.list.d/sogo-nightly.list`,
  change the version number `4` to `5`, like below:

```
# Debian
https://packages.inverse.ca/SOGo/nightly/5/debian ...

# Ubuntu
https://packages.inverse.ca/SOGo/nightly/5/ubuntu ...
```

* Upgrade SOGo packages:

```
apt-get update
apt-get install --only-upgrade 'sogo*' '*sope*'
```

* Update config file `/etc/sogo/sogo.conf`, enable TLS without verifying ssl cert.

```
    SOGoSMTPServer = "smtp://127.0.0.1:587/?tls=YES&tlsVerifyMode=allowInsecureLocalhost";
    SOGoMailingMechanism = smtp;
    SOGoSMTPAuthenticationType = PLAIN;

    SOGoSieveServer = "sieve://127.0.0.1:4190/?tls=YES&tlsVerifyMode=allowInsecureLocalhost";
```

* Restart SOGo and memcached services:

```
service memcached restart
service sogo restart
```

## Upgrade SOGo On FreeBSD

FreeBSD ports tree still ships SOGo-4, please wait for v5.

## Upgrade SOGo On OpenBSD

OpenBSD 6.7 still ships SOGo-4, please wait for v5.

## Troubleshooting

If SOGo doesn't work as expected, please check its log file
`/var/log/sogo/sogo.log`. If you don't understand what the error message means,
please extract related error message and post to our online support forum:
<https://forum.iredmail.org/>.
