Redirect webmail to HTTPS in Plesk

The webmailer from Plesk runs from home on port 80. This is unfortunately not optimal, but can be changed. A forced redirect to https is set up very quickly.

To avoid overwriting our configuration with a Plesk update, we will create a configuration file of your choice. This file must be created separately for each webmailer and placed in the corresponding configuration directory.

We create a file with the following content for mm_sslformailer.conf

This file is always placed under the appropriate webmailer. In the case of Centos, this would depend on each version:

For Debian and Ubuntu

It must also be ensured that mod_rewrite is active.

Then restart Apache. Now all accesses to the configured webmailer from Plesk are redirected to https via redirect.

There are several solutions:

solution 1:
Create a configuration file with the following content:

# touch /etc/httpd/conf/plesk.conf.d/webmails/roundcube/redirect.conf
# cat /etc/httpd/conf/plesk.conf.d/webmails/roundcube/redirect.conf
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}

2. restart apache :
# service httpd restart
Redirecting to /bin/systemctl restart httpd.service
It will create a redirect for Roundcube webmail. For Horde, just create the same file in /etc/httpd/conf/plesk.conf.d/webmails/horde/

solution 2: create a template : # mkdir -p /usr/local/psa/admin/conf/templates/custom
# cp -p /usr/local/psa/admin/conf/templates/default/domainWebmail.php /usr/local/psa/admin/conf/templates/custom/
add following to the end of file :

RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}

It needs to look like this :

# cat /usr/local/psa/admin/conf/templates/custom/domainWebmail.php

<?php echo AUTOGENERATED_CONFIGS; ?>

<?php /** @var Template_VariableAccessor $VAR */ ?>
<?php
if (!$VAR->domain->webmailActive) {
echo "# Domain is disabled or suspended\
"; return; } ?> ServerAlias "webmail.<?php echo $VAR->domain->asciiName ?>" <?php foreach ($VAR->domain->mailAliases AS $alias): ?> ServerAlias "webmail.<?php echo $alias->asciiName ?>" <?php endforeach; ?> RewriteEngine On RewriteCond %{HTTPS} off RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}

2 reconfigure each one of the domains : # /usr/local/psa/admin/sbin/httpdmng --reconfigure-all