Retrieving the capabilities of a POP3 mail server
POP3 mail servers may support different capabilities defined in RFC 2449. By using a POP3 command we can list them, and thanks to Nmap, we can automate this task and include this service information in our scan results.
This recipe will teach you how to list the capabilities of a POP3 mail server by using Nmap.
How to do it...
Open your favorite terminal and enter the following Nmap command:
$ nmap -p110 --script pop3-capabilities <target>
A list of server capabilities will be included in the script output section:
PORT STATE SERVICE 110/tcp open pop3 |_pop3-capabilities: USER CAPA UIDL TOP OK(K) RESP-CODES PIPELINING STLS SASL(PLAIN LOGIN)
How it works...
The script pop3-capabilities was submitted by Philip Pickering, and it attempts to retrieve the capabilities of POP3 and POP3S servers. It uses the POP3 command CAPA to ask the server for a list of supported commands. This script also attempts to retrieve the version string via...
