SMTP uses port number 465 by default. It stands for Simple Mail Transfer Protocol. It is the protocol for sending emails in a network.
port 25
465 is the default port number for SMTP. SMTP stands for Simple Mail Transfer Protocol. It is used for sending Emails over the network.
For Send Mail Transfer protocol default port number as is 25. SMTP actually stands for Simple Mail Transfer Protocol. I agree with the port number
SMTP is push protocol, stateful protocol which is used for sending Mails from Client to Client or Server to Server. Generally SMTP uses the encryption method of 7bit or 8bit ISCII but HTTP dose not use that. HTTP is pull protocol which is preferred for sites demand and this is stateless protocol.
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.
Smtp and tcp/ip
SMTP stands for Simple Mail Transfer Protocol. This is the generally accepted protocol for sending e-mail messages between servers; most e-mail systems that send mail over the Internet use SMTP to send messages from one server to another; the messages can then be retrieved with an e-mail client using either POP or IMAP.
Google uses 2 ports for SMTP most often. On is for SSL and the other is for TLS. SSL is operated on 465 and TLS uses 587.
In Computer Networking, protocol lays down the rules any networked two devices are expected to use when communicating to each other. Examples are HTTP, FTP and SMTP.
80 is HTTP, 25 is SMTP and 20/21 are used for FTP.
If using standard FTP protocol then ports 20 and 21 would be used.
UDP and ports 67 and 68.
POP3 is one of two e-mail inbox protocols (POP3: Post Office Protocol version 3; IMAP: Internet Message Access Protocol). SMTP (Simple Mail Transfer Protocol) is used in conjunction with either POP3 or IMAP to allow users to send e-mail addresses as well as receive them. Most web-based e-mail services does this transparently behind their networks and present a fancy UI for users to access their e-mail inboxes. However, you can opt to enable IMAP/POP3 + SMTP if you wish to not have to open up a Web browser every time you want to look at your e-mails, and use a dedicated e-mail program instead (i.e. Microsoft Outlook or Mozilla Thunderbird)