The Roundcube UI is built around IMAP so without a IMAP login Roundcube will not work. SMTP is only for sending mail.

Hi all..

Newbie to the community here.

I'm trying to set up roundcube to use smtp from postmark.com

On our hosting platform I've set up a subdomain and, using cpanel, and installed roundcube to the subdomain. It seems to be working (well the index.php url renders the roundcube login interface). In the installation steps I added the smtp server, port etc as provided by postmark.com.

When I get to the roundcube login page I'm using the username and password provided by postmark.com. The login fails.

The error in the log file reads (I've changed the identifies with [placeholders])

IMAP Error: Login failed for [postmarkusername] against smtp-broadcasts.postmarkapp.com from [myIPaddress]. Could not connect to smtp-broadcasts.postmarkapp.com:143: Connection refused in /home/[my subdomaindetails]/program/lib/Roundcube/rcube_imap.php on line 211 (POST /?_task=login&_action=login)

So that looks, to this newbie, like roundcube is passing the username to the IMAP port.

Can I tell roundcube to just use the SMTP details?

Many thanks
Roger

In settings under "Composing Messages" change "Compose HTML messages" to default the editor to start in HTML mode.

Roundcube is webmail software, someone (most likely the people you have bought the email account from) owns and runs the email server and installed the Roundcube software.

Roundcube in no way controls or run the domain or email server that your using.

If I were you I'd change the email on the account to avoid the problem.

Hello again,
Every time I would create a new email my signature would appear automatically as HTML.  Since I have to log in differently, my signature appears as plain text, but I can switch to HTML.  Is there a way to default to HTML?

Thank you.
Lila Johnson

Hello, I purchased an online account associated with this email address: *****@skyinbox.io. Looking at the source code for the page, it appears that the copyright belongs to: The Roundcube Dev Team.

I was given both the email address and password, and I changed it, but I don't see anywhere that it says a recovery email address in case I lose the password, and it doesn't do anything in the mailbox it has for doing so.

Does the seller of this email address have access to it somehow? Not finding anything about the "skyinbox.io" domain makes me suspicious.

https://skyinbox.io/

I'm a little scared they might try to scam me, which is why I'm asking here.

Thank you very much.

Check the users table in the database and look for multiple records for the same account. A difference username / mail host will cause a new user record to be created.

Good morning,
My usual way of logging in failed so I had to log in another way.  I have lost all my contacts, preferences and responses that I had created.  HELP!

Thank you!
Lila Johnson

Quote from: SKaero on April 14, 2025, 10:49:45 PMRoundcube doesn't have any access to your server and can't change the config to enable or disable plugins.

I didn't want to Roundcube Team add the plugin to my server. I would like (and propose to) add this plugin as an integral part of Roundcube system. This is the only way to make the system better for all users.

Hallo everyone i am  new to join roundcube