There was a download of Corporate SMTP Server 5.26.0.93 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This program was originally produced by Ixis Research LTD.
We recommend checking the downloaded files with any free antivirus. The software belongs to Communication Tools. The program's installer is commonly called SMTPServerGUI.exe. The latest version of the software is supported on PCs running Windows XP/7/8/10/11, 32-bit. The most popular versions among the software users are 5.2 and 3.0.
From the developer:
Corporate SMTP Server is a reliable high-performance SMTP server program for corporations and Internet Service Providers. It is simple and absolutely bullet-proof, it has a lot of security features and options you can use to protect the server from the outside of the Internet as well as safely block SPAM and spammers.
You may want to check out more software, such as Free SMTP Server, Advanced SMTP Server or Local SMTP Server Pro, which might be related to Corporate SMTP Server.