... Menno, 24 6 SMTP (Simple Mail Transport Protocol), 21 7–34 Authenticated, 23 2authentication, 21 9, 22 1, 23 2EHLO, 22 8 29 encryption, 23 0– 32 error handling, 22 5 28 , 23 3headers, 22 2 hops, 22 3, 22 8 ... 22 8 mail domains, 67 sending e-mail, 22 1 24 smtplib, 22 1, 22 4–34 spam and, 21 9, 22 1SSL/TLS, 23 0– 32 uses, 21 7, 22 1 SMTPException, 22 5 smtplib, 22 1, 22 4–34 SNI (Server Name Indication), 156sniffing, ... 20 socket names, 16, 29 , 52 63socket.error, 82, 22 5, 27 6, 29 9socket.gaierror, 61, 82, 22 5, 27 6socket.herror, 22 5socket.timeout, 82 sockets, 52 63 addresses, 26 , 42, 52 basics of, 19 21 ...