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BusinessMail X.400

BusinessMail X.400 Service

Here you will find instructions, manuals, order forms and the latest technical information about BusinessMail X.400. Visit us on the business customer portal of
Telekom Germany GmbH.

Call us on 0800 5 229 230 or send an email to:
helpdesk.businessMailX400@telekom.deAus. Outside Germany, please dial the following number:
+4962154547900.

A member of the Telekom service team advises customers on BusinessMail X.400.

Do you have any questions or suggestions about our product?

Call us on 0800 5 229 230 or send an email to: helpdesk.businessMailX400@telekom.deFrom
outside Germany, please dial the following number:
+4962154547900

BusinessMail X.400

Exchange server certificate for Secure P7 on 3 July 2025 at 9:10 a.m. CEST

On 3 July 2025 at approximately 9:10 a.m. CEST, the server certificate for securep7.telebox400.de (Secure P7 access via the Internet, standard access port 5432 and alternative access port 5438) will be replaced. Users of FileWork or UA-FI solutions do not need to take any action, as the root CA certificate remains unchanged in the new server certificate. Users of third-party products can find here all certificates relevant to the replacement. Please then coordinate the installation of the certificates with the manufacturer of your P7 software.

Replacement of Secure P7 server certificate on 3 July 2025, at 9:10 a.m. CEST

On 3 July 2025, at approximately 09:10 a.m. CEST, the server certificate of securep7.telebox400.de (Secure P7 access via the Internet, default access using port 5432 and alternative access using port 5438) will be replaced. When using FileWork or other UA-FI based solutions, no action will be required because the new server certificate will be created with the same Root CA certificate. When using third-party products, you will find here all certificates necessary for this replacement. Please coordinate the installation of the certificates with the manufacturer of your P7 software.

Everything about BusinessMail X.400

  • Smiling woman talking on a smartphone while looking at a screen and checking her root certificate.

    Root certificates

    Here you will find the current root certificate for TLS-encrypted access.

    To root certificates
  • Woman with tablet shows another woman the web-based configuration tool.

    WebConfig

    WebConfig offers secure and simple web-based management of partner relationships and mail filters, including an automatable RESTful API for your configuration.

    To WebConfig
  • Mann und Frau prüfen den aktuellen Betriebsstatus des BusinessMail X.400 Systems.

    Status Wartung

    Here you can find out about the current operating status of the BusinessMail X.400 system.

    About Status Wartung
  • Mann und Frau im Büro unterhalten sich über Beschreibungen und zusätzliche Dokumente zu WebConfig.

    Downloads

    Here you will find all the important descriptions and manuals you need for reliable data communication.

    To Downloads
  • A woman sits at a table with documents in a modern office and looks at the screen.

    Order forms

    Information about the helpdesk mailbox with contact address, telephone number and information about terms and conditions, services and prices for BusinessMail X.400

    To order forms
  • A man from customer service smiles and talks on the phone with a customer.

    Product information

    Product information BusinessMail X.400: Secure and fully traceable electronic business data exchange.

    To product information

Terms and conditions, service descriptions, price lists

General Terms and Conditions for BusinessMail X.400, MailBox X.400 and MailGate X.400.

Click here for the terms and conditions, service descriptions, price lists