diff --git a/deploy/basics.yml b/deploy/basics.yml
index 5d80a067..c57b3af9 100644
--- a/deploy/basics.yml
+++ b/deploy/basics.yml
@@ -13,6 +13,7 @@
       ansible.builtin.command:
         cmd: openssl dhparam -out /etc/nginx/dhparam.pem 2048
         creates: /etc/nginx/dhparam.pem
+
     - name: Install fail2ban
       apt:
         pkg: fail2ban
@@ -120,7 +121,7 @@
     #     dest: /etc/postfix/sasl_passwd
     #     content: |-
     #       # After updating, run `sudo postmap hash:/etc/postfix/sasl_passwd`.
-    #       [pine.sfconservancy.org]:587 conference@sfconservancy.org:PASSWORD
+    #       [mail.sfconservancy.org]:587 conference@sfconservancy.org:PASSWORD
 
     - name: Configure Postfix envelope rewriting
       copy:
diff --git a/deploy/postfix/main.cf b/deploy/postfix/main.cf
index a7ff7537..da6f73f0 100644
--- a/deploy/postfix/main.cf
+++ b/deploy/postfix/main.cf
@@ -36,8 +36,8 @@ myhostname = symposion.sfconservancy.org
 alias_maps = hash:/etc/aliases
 alias_database = hash:/etc/aliases
 myorigin = /etc/mailname
-mydestination = $myhostname, symposion.novalocal, symposion, localhost
-relayhost = [pine.sfconservancy.org]:587
+mydestination = $myhostname, symposion, localhost
+relayhost = [mail.sfconservancy.org]:587
 mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
 mailbox_size_limit = 0
 recipient_delimiter = +
@@ -50,7 +50,6 @@ smtp_sasl_auth_enable = yes
 smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
 smtp_sasl_security_options = noanonymous
 smtp_tls_security_level = secure
-smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
 
 # Increase default limit of 10M to 50M
 message_size_limit = 51200000
diff --git a/fabfile.py b/fabfile.py
index 7f3cc6f7..d34de72d 100644
--- a/fabfile.py
+++ b/fabfile.py
@@ -11,7 +11,6 @@ import os
 
 from fabric import task  # type: ignore
 from invoke.collection import Collection  # type: ignore
-from patchwork.files import exists
 from vps_deploy import django_fabric2 as df2  # type: ignore
 
 hosts = os.environ['FABRIC_HOSTS'].split(',')
@@ -27,7 +26,7 @@ def deploy(c):
     install_essentials(c)
     df2.transfer_files_git(c)
     df2.init(c)
-    if not exists(c, c.env.virtualenv):
+    if not c.run(f'test -e {c.env.virtualenv}', warn=True):
         c.sudo(f'mkdir -p $(dirname {c.env.virtualenv})')
         c.sudo(f'chown {c.user} $(dirname {c.env.virtualenv})')
         c.run('{env.python} -m venv --system-site-packages {env.virtualenv}'.format(env=c.env))
@@ -81,13 +80,13 @@ ns.configure({
         'db_name': 'symposion',
         'project_dir': '/srv/symposion_app',
         'media_dir': 'media',
-        'virtualenv': '/srv/venvs/symposion-django-py39',
+        'virtualenv': '/srv/venvs/symposion-django-cp311',
         'site_name': 'symposion',
         'requirements': 'requirements.txt',
         'settings': 'pinaxcon.settings',
         'uwsgi_conf': 'deploy/uwsgi.ini',
         'nginx_conf': 'deploy/nginx.conf',
-        'python': '/usr/bin/python3.9',
+        'python': '/usr/bin/python3.11',
         'url': 'https://2023.fossy.us/',
         'domain': '2023.fossy.us',
     },
diff --git a/requirements.txt b/requirements.txt
index 6cc0c66e..01aa5da7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ pinax-eventlog[django-lts]==5.1.0
 django-formset-js==0.5.0
 whitenoise==5.2.0
 dj-database-url==0.5.0
-pylibmc==1.6.1
+pylibmc==1.6.3
 django-debug-toolbar==3.1.1
 django-bootstrap-form==3.4
 django-settings-export~=1.2.1