This version of mailer.py is the same as the one in zope.sendmail, modulo some...

This version of mailer.py is the same as the one in zope.sendmail, modulo some whitespace changes and not all error handling from z.s being present.  It should therefore be safe to make this a deprecated alias.

src/Products/MailHost/mailer.py

-##############################################################################
-#
-# Copyright (c) 2003 Zope Foundation and Contributors.
-# All Rights Reserved.
-#
-# This software is subject to the provisions of the Zope Public License,
-# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
-# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
-# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
-# FOR A PARTICULAR PURPOSE.
-#
-##############################################################################
+import zope.deferredimport
 
-"""
-SMTPMailer with TLS/SSL support
-(original code taken from zope.sendmail)
-
-$Id: mailer.py 78981 2007-08-19 06:38:48Z andreasjung $
-"""
-__docformat__ = 'restructuredtext'
-
-import socket
-from smtplib import SMTP
-
-from zope.interface import implements
-from zope.sendmail.interfaces import ISMTPMailer
-
-have_ssl = hasattr(socket, 'ssl')
-
-class SMTPMailer(object):
-
-    implements(ISMTPMailer)
-
-    smtp = SMTP
-
-    def __init__(self, hostname='localhost', port=25,
-                 username=None, password=None, no_tls=False, force_tls=False):
-        self.hostname = hostname
-        self.port = port
-        self.username = username
-        self.password = password
-        self.force_tls = force_tls
-        self.no_tls = no_tls
-
-    def send(self, fromaddr, toaddrs, message):
-        connection = self.smtp(self.hostname, str(self.port))
-
-        # send EHLO
-        code, response = connection.ehlo()
-        if code < 200 or code >300:
-            code, response = connection.helo()
-            if code < 200 or code >300:
-                raise RuntimeError('Error sending HELO to the SMTP server '
-                                   '(code=%s, response=%s)' % (code, response))
-
-        # encryption support
-        have_tls =  connection.has_extn('starttls') 
-        if not have_tls and self.force_tls:
-            raise RuntimeError('TLS is not available but TLS is required')
-
-        if have_tls and have_ssl and not self.no_tls: 
-            connection.starttls()
-            connection.ehlo()
-
-        if connection.does_esmtp: 
-            if self.username is not None and self.password is not None:
-                connection.login(self.username, self.password)
-        elif self.username:
-            raise RuntimeError('Mailhost does not support ESMTP but a username '
-                                'is configured')
-
-        connection.sendmail(fromaddr, toaddrs, message)
-        connection.quit()
+zope.deferredimport.deprecatedFrom(
+    "Import from zope.sendmail instead",
+    'zope.sendmail.mailer',
+    'SMTPMailer',
+    )