How to Change the Port Number in Postfix

How to Change the Port Number in PostfixThe default network SMTP port for Postfix, Sendmail and most other mail servers is 25. This is the port used to send email, and most email clients will use it by default. Unfortunately, some Internet service providers have started to block port 25 because of the high volume […]

Snipt – isagoksu – Show the process ID that uses specific port | Share and store code or command snippets.

# The linux fuser command has a special option for port conflicts. # Use fuser -n tcp <port id> for tcp ports to see which process is using # the port. # For example to see which application is already using port 80 use: $ fuser -n tcp 80 # The netstat command can also […]