This article applies to:
- Trustwave SEG
- Trustwave SPE
Symptoms:
- Error message similar to:
06032 15:39:06.765 Event - Failed to bind socket to <[0.0.0.0]:25>, an MTA (SMTP)-Simple Mail Transport Protocol server is probably already running (typically the Windows 'Simple Mail Transport Protocol' service) - 10048 - WSAEADDRINUSE
Running netstat shows no other application using this port.
Causes:
- Microsoft Update KB4338815 has been installed.
- Note that this issue does not originate in SEG. SEG operation is affected by the operating system update.
Resolution:
If your system is affected by this issue, you can resolve it with one of the following actions:
- Uninstall the named Microsoft Windows Update
- Install a fix from Microsoft, such as KB4345424. Fixes refer to "TCP port in use" with SQL Server, but the same fix applies to other ports such as port 25.
Notes:
This article will be updated with any further information available.