diff --git a/ietf/settings.py b/ietf/settings.py
index 0c57d87d1..30f4b367c 100644
--- a/ietf/settings.py
+++ b/ietf/settings.py
@@ -744,8 +744,6 @@ IANA_SYNC_PASSWORD = "secret"
 IANA_SYNC_CHANGES_URL = "https://datatracker.iana.org:4443/data-tracker/changes"
 IANA_SYNC_PROTOCOLS_URL = "https://www.iana.org/protocols/"
 
-RFC_TEXT_RSYNC_SOURCE="ftp.rfc-editor.org::rfcs-text-only"
-
 RFC_EDITOR_SYNC_PASSWORD="secret"
 RFC_EDITOR_SYNC_NOTIFICATION_URL = "https://www.rfc-editor.org/parser/parser.php"
 RFC_EDITOR_GROUP_NOTIFICATION_EMAIL = "webmaster@rfc-editor.org"
@@ -972,7 +970,6 @@ OIDC_EXTRA_SCOPE_CLAIMS = 'ietf.ietfauth.utils.OidcExtraScopeClaims'
 # ==============================================================================
 
 
-RSYNC_BINARY = '/usr/bin/rsync'
 YANGLINT_BINARY = '/usr/bin/yanglint'
 DE_GFM_BINARY = '/usr/bin/de-gfm.ruby2.5'
 
@@ -1014,7 +1011,6 @@ CHAT_URL_PATTERN = 'https://zulip.ietf.org/#narrow/stream/{chat_room_name}'
 # CHAT_ARCHIVE_URL_PATTERN = 'https://www.ietf.org/jabber/logs/{chat_room_name}?C=M;O=D'
 
 PYFLAKES_DEFAULT_ARGS= ["ietf", ]
-VULTURE_DEFAULT_ARGS= ["ietf", ]
 
 # Automatic Scheduling
 #
@@ -1062,8 +1058,6 @@ GROUP_ALIAS_DOMAIN = IETF_DOMAIN
 TEST_DATA_DIR = os.path.abspath(BASE_DIR + "/../test/data")
 
 
-POSTCONFIRM_PATH   = "/a/postconfirm/wrapper"
-
 USER_PREFERENCE_DEFAULTS = {
     "expires_soon"  : "14",
     "new_enough"    : "14",
@@ -1078,6 +1072,7 @@ EXCLUDED_PERSONAL_EMAIL_REGEX_PATTERNS = [
     "@ietf.org$",
 ]
 
+# Configuration for django-markup
 MARKUP_SETTINGS = {
     'restructuredtext': {
         'settings_overrides': {
@@ -1091,8 +1086,6 @@ MARKUP_SETTINGS = {
     }
 }
 
-MAILMAN_LIB_DIR = '/usr/lib/mailman'
-
 # This is the number of seconds required between subscribing to an ietf
 # mailing list and datatracker account creation being accepted
 LIST_ACCOUNT_DELAY = 60*60*25           # 25 hours
diff --git a/ietf/utils/aliases.py b/ietf/utils/aliases.py
deleted file mode 100644
index 9f9aebc0b..000000000
--- a/ietf/utils/aliases.py
+++ /dev/null
@@ -1,82 +0,0 @@
-#!/usr/bin/env python
-# Copyright The IETF Trust 2013-2020, All Rights Reserved
-# -*- coding: utf-8 -*-
-# -*- Python -*-
-#
-# $Id: aliasutil.py $
-#
-# Author: Markus Stenberg <mstenber@cisco.com>
-#
-
-
-"""
-
-Mailing list alias dumping utilities
-
-"""
-
-
-from django.conf import settings
-from ietf.utils.log import log
-
-import debug                            # pyflakes:ignore
-
-def rewrite_email_address(email):
-    """ Prettify the email address (and if it's empty, skip it by
-    returning None). """
-    if not email:
-        return
-    email = email.strip()
-    if not email:
-        return
-    if email[0]=='<' and email[-1] == '>':
-        email = email[1:-1]
-    # If it doesn't look like email, skip
-    if '@' not in email and '?' not in email:
-        return
-    return email
-
-def rewrite_address_list(l):
-    """ This utility function makes sure there is exactly one instance
-    of an address within the result list, and preserves order
-    (although it may not be relevant to start with) """
-    h = {}
-    for address in l:
-        #address = address.strip()
-        if address in h: continue
-        h[address] = True
-        yield address
-
-def dump_sublist(afile, vfile, alias, adomains, vdomain, emails):
-    if not emails:
-        return emails
-    # Nones in the list should be skipped
-    emails = [_f for _f in emails if _f]
-
-    # Make sure emails are sane and eliminate the Nones again for
-    # non-sane ones
-    emails = [rewrite_email_address(e) for e in emails]
-    emails = [_f for _f in emails if _f]
-
-    # And we'll eliminate the duplicates too but preserve order
-    emails = list(rewrite_address_list(emails))
-    if not emails:
-        return emails
-    try:
-        filtername  = 'xfilter-%s' % (alias, )  # in aliases, --> | expandname
-        expandname  = 'expand-%s' % (alias, )   # in virtual, --> email list
-
-        for domain in adomains:
-            aliasaddr   = '%s@%s' % (alias, domain) # in virtual, --> filtername
-            vfile.write('%-64s  %s\n' % (aliasaddr, filtername))
-        afile.write('%-64s  "|%s filter %s %s"\n' % (filtername+':', settings.POSTCONFIRM_PATH, expandname, vdomain))
-        vfile.write('%-64s  %s\n' % ("%s@%s"%(expandname, vdomain), ', '.join(emails)))
-
-    except UnicodeEncodeError:
-        # If there's unicode in email address, something is badly
-        # wrong and we just silently punt
-        # XXX - is there better approach?
-        log('Error encoding email address for an %s alias: %s' % (alias, repr(emails)))
-        return []
-    return emails
-