log4net SDK Reference |

# SmtpAppender.Port Property

The port on which the SMTP server is listening

[Visual Basic]
Public Property Port As Integer
[C#]
public int Port {get; set;}

#### Remarks

> CAUTION Server Port is only available on the MS .NET 1.1 runtime.

The port on which the SMTP server is listening. The default port is `25`. The Port can only be changed when running on the MS .NET 1.1 runtime.

#### See Also

SmtpAppender Class | log4net.Appender Namespace