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All technologies at a glance

eMail for Enterprise

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Our Technologies for Enterprise

  • DKIM

    DomainKeys Identified Mail (DKIM) is a method for associating a domain name to an email message, thereby allowing a person, role, or organization to claim some responsibility for the message. The association is set up by means of a digital signature which can be validated by recipients.

  • Dovecot

    Dovecot

    Dovecot is an open source IMAP and POP3 server for Linux/UNIX-like systems, written primarily with security in mind. Dovecot primarily aims to be a lightweight, fast and easy to set up open source mailserver.

  • Dspam

    Dspam

    DSPAM is a scalable and open-source content-based spam filter designed for multi-user enterprise systems. It is an adaptive filter which means it is capable of learning and adapting to each user's email

    The name Dspam and the corresponding logo are registered trademarks of DSPAM Project.

    Homepage of Dspam

  • Greylisting

    Greylisting (or graylisting) is a method of defending e-mail users against spam. A mail transfer agent (MTA) using greylisting will "temporarily reject" any email from a sender it does not recognize. If the mail is legitimate the originating server will, after a delay, try again and, if sufficient time has elapsed, the email will be accepted.

  • Horde Groupware

    Horde Groupware

    Horde is a free, enterprise ready, browser-based communication suite. Users can send, read and organize email messages and manage and share calendars, contacts, tasks and notes with users both inside and beyond their own network. It features different interfaces for different devices, and synchronization out of the box. Always get the best out of your desktop browser, smartphone, tablet or mobile device!

  • Microsoft Exchange Server

    Microsoft Exchange Server is a mail server, calendaring software and contact manager developed by Microsoft. It is a server program that runs on Windows Server and is part of the Microsoft Servers line of products.

    The name Microsoft Exchange Server and the corresponding logo are registered trademarks of Microsoft Corporation.

    Homepage of Microsoft Exchange Server

  • Postfix

    Postfix

    Postfix is a free and open-source mail transfer agent (MTA) that routes and delivers electronic mail, intended as an alternative to the widely used Sendmail MTA.

  • Sender Policy Framework

    Sender Policy Framework (SPF) is an email validation system designed to prevent email spam by detecting email spoofing, a common vulnerability, by verifying sender IP addresses.

About

Meine Name ist Johannes Heyder und ich bin ein freiberuflicher IT-Administrator, Webentwickler, Webdesigner, Hoster & Dozent aus Erfurt. Routiniert und mit Freude arbeite ich mit Servern und Netzwerken vor Ort und unterstütze Kunden bei ihren Projekten.

In den vergangenen Jahren habe ich mich zudem mit Leidenschaft der Webentwicklung verschrieben. Seitdem gehört Triangle CMS zu dem Repertoire, ein ausgereiftes Content-Management-System für spezielle Ansprüche und individuelle Aufgaben, aber auch einfachere Websites. Als Full-Service-Anbieter wird auf eigenen Servern gehostet - von DNS, Datenbanken, Cache, Logging, Web bis hin zu eMails, Jabber & Co.

Zudem stehe ich auch als Dozent für Schulungen zur Verfügung.

  • Richard-Eiling-Str. 2
  • 99096
  • Erfurt
  • Deutschland