SMTP
Typical ports: TCP/25 TCP/465
Last updated
Typical ports: TCP/25 TCP/465
Last updated
Nmap script:
telnet <FQDM/IP> 25
AUTH PLAIN
AUTH is a service extension used to authenticate the client.
HELO
The client logs in with its computer name and thus starts the session.
MAIL FROM
The client names the email sender.
RCPT TO
The client names the email recipient.
DATA
The client initiates the transmission of the email.
RSET
The client aborts the initiated transmission but keeps the connection between client and server.
VRFY
The client checks if a mailbox is available for message transfer.
EXPN
The client also checks if a mailbox is available for messaging with this command.
NOOP
The client requests a response from the server to prevent disconnection due to time-out.
QUIT
The client terminates the session.
Metasploit (msfconsole) module: scanner/smtp/smtp_enum