DNS /Rewrite? - Customizing the webmail urls for multiple domains on a single box?

1

I have multiple domains on a single box. Is there a way that I can create unique urls for accessing Roundcube?

eg

webmail.domain1.com -> box1.domaina.com/webmail
webmail.domain2.com -> box1.domaina.com/webmail

Can i create an Apache rewrite rule to accomplish this? Other thoughts?

2

You can create a dummy mail alias example@webmail.domain1.com for each domain that you have. Then go to the web section of the admin interface and configure a custom web path there. Finally put an index.php file into the directory on the server and fill its contents with:

<?php
header("Location: https://box1.domaina.com/webmail");
?>

You can also create a single folder on the server, for example webmail-redirect and put the file in there. Then after doing the admin interface step you can delete the folder you had to create and create a symbolic link to the webmail-redirect folder instead.

cd /home/user-data/www
rmdir webmail.domain1.com
ln -s webmail-redirect webmail.domain1.com

This way you will have the php file on the server just once and all domains will use the same redirect, which makes it easier to change later.

3

Is there a way to do this without using php?

4

You can use a JavaScript or HTML-based redirect instead but they would be client-dependent.

The only alternative is to directly adjust the nginx configuration but that is not supported by mail-in-a-box.

5

@peternemser for HTML Redirect:

<html>
<head>
<meta http-equiv="refresh" content="0; url=http://example.com/" />
</head>
</html>
2 Likes
6

Apologies for reviving a super old topic, but I just wanted to say that @murgero’s HTML redirect also served the purpose of fixing a related annoyance of mine. I modified the HTML code as follows:

<html>
<head>
<meta http-equiv="refresh" content="0; url=/admin" />
</head>
</html>

This made it so that box.example.com redirects to box.example.com/admin, which is convenient because web browsers only autocomplete the domain name, so I don’t have to manually type the “/admin” at the end anymore.

FWIW I think the above code might be a reasonable default for the default subdomains, rather than the “This is a Mail in a Box” text, which makes more sense for custom, per-user subdomains.

1 Like
7

You can actually create a custom.yaml file in /home/user-data/www/

mydomain:
  redirects:
    ^/$: $scheme://mydomain/mail

Then you need to go into mailinabox/management and do sudo ./mailinabox/tools/web_update to refresh the dns

This solution does not get overwritten during upgrades.

8

Is this a relatively new feature? at the time I posted my solution, I don’t believe MIAB had the option for custom configurations like that.

9

it was available at least since 2014, but it’s a hidden feature.

1 Like