POP3 SASL SASL AUTH CRAM-MD5 RFC1734 RFC2195 RFC5034 # Server-side AUTH CRAM-MD5 REPLY AUTH + %b64[%3c1972.987654321@curl%3e]b64% REPLY %b64[user 7031725599fdbb5d412689aa323e3e0b]b64% +OK Login successful From: me@somewhere To: fake@nowhere body -- yours sincerely # Client-side pop3 crypto digest POP3 CRAM-MD5 authentication pop3://%HOSTIP:%POP3PORT/%TESTNUMBER -u user:secret # Verify data after the test has been "shot" CAPA AUTH CRAM-MD5 %b64[user 7031725599fdbb5d412689aa323e3e0b]b64% RETR %TESTNUMBER QUIT