added sieve starttls type for managesieve protocol

README.rst

@@ -1347,7 +1347,7 @@ When using an object, the avaialable fields are:
 * ``port`` specifies the port number to connect to.
   Required.
 * ``starttls`` specifies the STARTTLS mechanism that should be used to initiate a TLS session.
-  Allowed values are: ``null``, ``smtp``, ``pop3``, ``imap``, ``ftp``, and ``xmpp``.
+  Allowed values are: ``null``, ``smtp``, ``pop3``, ``imap``, ``sieve``, ``ftp``, and ``xmpp``.
   The default value is ``null``.
 * ``protocol`` specifies the protocol used to obtain additional information to verify.
   Currently this can retrieve Public-Key-Pins http headers to ensure that they are properly set.

acmebot

@@ -153,7 +153,7 @@ class AcmeManager(object):
     def __init__(self):
         self.script_dir = os.path.dirname(os.path.realpath(__file__))
         self.script_name = os.path.basename(__file__)
-        self.script_version = '2.1.1'
+        self.script_version = '2.2.0'
 
         self._color_codes = {
             'black': 30,
@@ -2664,6 +2664,15 @@ class AcmeManager(object):
             self._detail('XMPP: ', sock.recv(4096), '\n')
             sock.send(b'<starttls xmlns="urn:ietf:params:xml:ns:xmpp-tls"/>')
             self._detail('XMPP: ', sock.recv(4096), '\n')
+        elif ('sieve' == type):
+            buffer = sock.recv(4096)
+            self._detail('SIEVE: ', buffer)
+            if (b'"STARTTLS"' not in buffer):
+                sock.shutdown()
+                sock.close()
+                raise Exception('STARTTLS not supported on server')
+            sock.send(b'StartTls\r\n')
+            self._detail('SIEVE: ', sock.recv(4096))
         else:
             sock.shutdown()
             sock.close()