generally smtp is on 25 and pop3 is on 110. but there are different ports for different types of mail servers too.
The Internet Message Access Port is commonly assigned to port numbers 143 and 993. If one has access rights to their email server, they can manually change their IMAP port numbers there.
1024
A Web server - or most other servers - will HAVE TO reserve a port number, to function correctly. For a Web server, this is usually port 80, but this can be changed to any other port.A Web server - or most other servers - will HAVE TO reserve a port number, to function correctly. For a Web server, this is usually port 80, but this can be changed to any other port.A Web server - or most other servers - will HAVE TO reserve a port number, to function correctly. For a Web server, this is usually port 80, but this can be changed to any other port.A Web server - or most other servers - will HAVE TO reserve a port number, to function correctly. For a Web server, this is usually port 80, but this can be changed to any other port.
port
port
Usually its port 21. Though alot of people fail to realise that just because that's the default setting doesn't mean you cant change it. FTP servers listen on port 21. The data transfers happen on a different port, which is usually done in passive mode, on a port above 1024.
An SMTP port is the port used to transfer email using the SMTP protocol. Typically SMTP is configured to use TCP port 25, although some servers will use TCP port 587.
1024
Port
By default, most web servers are run on port 80. You can change this in the server's configuration file to something else, but then a web browser may have trouble accessing it.
You simply change the port number in the minecraft server properties
Allows your email(s) from Gmail (or other free email services) to be forwarded to another email address such as Outlook - internal company email etc.