IMAP, POP3 and SMTP settings for your mail client

To set up your email program, you need the server hostname, ports and encryption settings. The settings are identical for all mailboxes of a domain. You will find an overview here and can copy them directly from your hosting panel.

Server settings at a glance

Item	Value
Server hostname	mail.<yourdomain>
IMAPInternet Message Access Protocol: standard for retrieving email that keeps messages on the server and syncs them across multiple devices. port (incoming)	993 with SSL/TLS
POP3Post Office Protocol version 3: older retrieval standard that downloads messages from the server and stores them locally. Only useful if you use a single device. port (incoming)	995 with SSL/TLS
SMTPSimple Mail Transfer Protocol: standard for sending email through a server. port (outgoing)	587 with STARTTLSExtension of the SMTP protocol that upgrades an initially unencrypted connection to TLS encryption.
Username	full email address
Password	password of the email account
Authentication	password (normal)

Fallback hostname

If mail.<yourdomain> does not resolve because your domain does not use rack::SPEED nameservers, use the server’s hostname instead. You see it in your browser’s address bar when you are logged in to the panel, and it always ends in rackspeed-cloud.de. Same mailbox, same login.

Display the settings directly in the panel

Both panels include a configuration overview for each mailbox. You can copy the settings from there or download a ready-made profile.

Plesk

1. Log in to the Plesk panel.
2. In the left sidebar, click Mail and select your address.
3. Click Copy Link to Setup Wizard or open the Manual Setup tab.
4. The view shows the hostname, ports and encryption, plus separate tabs with auto-config profiles for Thunderbird, Gmail, Outlook and iOS Mail.

cPanel

1. Log in to cPanel.
2. Open Tools → Email Accounts.
3. Next to the address you want, click Connect Devices.
4. The top section contains auto-config scripts for iOS, macOS Mail and Outlook. Below that, the Manual Settings section shows the settings under Secure SSL/TLS Settings.

Auto-configuration only with rack::SPEED DNS

Automatic detection in Thunderbird, Apple Mail or iOS only works if your domain uses the rack::SPEED nameservers. With external DNS, you have to enter the server settings manually, or add the required SRV recordsDNS service records: tell clients which hostname and port a specific service runs on. at your DNS provider (Plesk shows them in the Autodiscover tab).

Troubleshooting

mail.<yourdomain> is not reachable

Your domain probably does not use the rack::SPEED nameservers. In that case, the mail. record does not exist.

Solution: Enter the server hostname in your mail client instead. You see it in your browser’s address bar when you are logged in to the panel (it ends in rackspeed-cloud.de). It works exactly the same.

SSL certificate warning in the client

mail.<yourdomain> does not have a valid certificate, often because no separate SSL configuration exists for the mail domain.

Solution: The quickest fix is to use the server hostname instead of the domain. The cleaner fix: in Plesk, issue a Let’s Encrypt certificate for the mail domain under Mail Settings.

Login is rejected despite correct server settings

Most common cause: the username is incomplete.

Solution: Always use the full email address as the username (info@example.com), not just the part before the @.

Related articles

• Create an email account: if the address does not exist yet.
• Set up an email account in your client: instructions for each program (Outlook, Apple Mail, Thunderbird, iOS, Android).
• Problems with incoming mail: when messages should arrive but do not show up in the mailbox.

Still stuck?

If the client does not connect despite correct settings: open a ticket in the customer center. Include a screenshot of the error message and the hostname you used. This speeds up the diagnosis.