Frequently Asked Questions

Run pmself.exe from your CD or download. Follow the setup wizard — Postmaster installs itself and places an icon on your desktop. Start Postmaster from the icon, then use the browser-based admin at http://localhost:8383 to create user accounts.

Yes. Download pm_other.zip, ensure Java 1.1.x is installed, unzip, and run the postmaster shell script. The server starts on ports 25 (SMTP) and 110 (POP3) by default.

A LAN is recommended for full benefit. However, Postmaster can run on a single standalone machine if you only need one email account or use it as an SMTP relay.

Yes. You can configure as many domains as your organisation uses. All domains are managed from the same Postmaster installation.

Check that all network cable connections are secure, ensure all machines are on the same LAN segment, verify IP addresses are unique and in the same subnet, and contact your network administrator if the issue persists.

This is a quoted-printable encoding issue in older Postmaster versions. Please upgrade to the latest version of Postmaster to resolve this.

This usually means the PATH variable has too many directories. Open postmaster.bat in Notepad, replace "%PATH%" with "C:\WINDOWS\COMMAND", save and retry.

Go to the Internet section of Postmaster and update the password. If you use the Invoke DUN feature, also update the password in the Scheduler section under the DUN configuration.

Use Telnet: "telnet [postmaster-ip] 25" should return "SMTP server ready for transmission". "telnet [postmaster-ip] 110" should return "+OK POP3 server ready". If not, check that ports 25 and 110 are free.

Yes. Configure the user as a "gateway user" in Users > Edit User > Advanced > User Type dropdown. This allows Postmaster to act as an SMTP relay for your existing groupware.