Closes bug #980938.

From SF patch #852334.

(most of the patch hides in rev. 1.59). Backported to 2.2.

The problem was that it expected rfc822.parseaddr() to return None
upon a parse failure.  The actual, documented return value for a
parse failure is (None, None).

Closes SF bug 602029.

x in string.whitespace => x.isspace()
type(x) in types.StringTypes => isinstance(x, basestring)
isinstance(x, types.StringTypes) => isinstance(x, basestring)
type(x) is types.StringType => isinstance(x, str)
type(x) == types.StringType => isinstance(x, str)
string.split(x, ...) => x.split(...)
string.join(x, y) => y.join(x)
string.zfill(x, ...) => x.zfill(...)
string.count(x, ...) => x.count(...)
hasattr(types, "UnicodeType") => try: unicode except NameError:
type(x) != types.TupleTuple => not isinstance(x, tuple)
isinstance(x, types.TupleType) => isinstance(x, tuple)
type(x) is types.IntType => isinstance(x, int)

Do not mention the string module in the rlcompleter docstring.

This partially applies SF patch http://www.python.org/sf/562373
(with basestring instead of string). (It excludes the changes to
unittest.py and does not change the os.stat stuff.)

which requires that if there are ehlo parameters returned with an ehlo
keyword (in the response to EHLO), the keyword and parameters must be
delimited by an ASCII space.  Thus responses like

    250-AUTH=LOGIN

should be ignored as non-conformant to the RFC (the `=' isn't allowed
in the ehlo keyword).

This is a bug fix candidate.

better local_hostname default.  According to RFC 2821, it is
recommended that the fqdn hostname be provided in the EHLO/HELO verb
and if that can't be calculated, to use a domain literal.

The rationale for this change is documented in SF patch #497736 which
also had privacy concerns about leaking the fqdn in the EHLO/HELO.  We
decided this wasn't a big concern because no user data is leaked, and
the IP will always be leaked.  The local_hostname argument is provided
for those clients that are super paranoid.

Using localhost.localdomain may break some strict smtp servers so we
decided against using it as the default.

as the fully qualified local hostname.

2.2.1 candidate.

Replaces calls to socket.send() (which isn't guaranteed to send all data)
with the new socket.sendall() method.

call self.close() just before raising SMTPServerDisconnected.  This
allows you to, e.g. reconnect after a server timeout.

Merged from the 2.2c1 branch.

   This patch adds the features from RFC 2487 (Secure SMTP
   over TLS) to the smtplib module:

   - A starttls() function
   - Wrapper classes that simulate enough of sockets and
     files for smtplib, but really wrap a SSLObject
   - reset the list of known SMTP extensions at each call
     of ehlo(). This should have been the case anyway.

#460112 by Gerhard Haering.

(With slight layout changes to conform to docstrings guidelines and to
prevent a line longer than 78 characters.  Also fixed some docstrings
that Gerhard didn't touch.)

also modified check_all function to suppress all warnings since they aren't
relevant to what this test is doing (allows quiet checking of regsub, for
instance)

Use != instead of <> since <> is documented as "obsolescent".
Use "is" and "is not" when comparing with None or type objects.

to call self.close() to reclaim some file descriptors, the reraise the
exception.  Closes SF patch #102185 and SF bug #119833.

'helo' and 'ehlo' message, and exports the 'make_fqdn' function. This
function should be moved to socket.py, if that module ever gets a Python
wrapper.

in smtplib.ehlo() and smtplib.helo().

closes patch #101103
closes bug   #110935