I'm unsure whether the mail server is pop3 / imap.
PORT STATE SERVICE
22/tcp open ssh
25/tcp open smtp
80/tcp open http
443/tcp open https
8080/tcp open http-proxy
8100/tcp open xprint-server
8443/tcp open https-alt
The above server does not seem to provide POP3 or IMAP (inbound mail). You should speak to your email provider or network administrator to get the server information for inbound email.
The ports used by email (inbound and outbound) depend on:
- The authentication method used
- What port are configured on the email server(s)
- The default ports for POP3, IMAP, and SMTP are listed below.
Looking at the list of your open ports it would appear that the server has:
SMTP on port 25 (not encrypted, but requires authorisation with user/pass).
SMTP is used for outbound mail.
The server does not have any of the default ports open for POP3 or IMAP and a different server will be used for inbound mail.
Default POP3 ports
Server: Authentication: Port:
Non-Encrypted AUTH 110
Secure (SSL) SSL 995
Default IMAP ports
Server: Authentication: Port:
Non-Encrypted AUTH 143
Secure (TLS) StartTLS 143
Secure (SSL) SSL 993
Default SMTP ports
Server: Authentication: Port:
Non-Encrypted AUTH 25 (or 587)
Secure (TLS) StartTLS 587
Secure (SSL) SSL 465
