diff --git a/CHANGELOG.md b/CHANGELOG.md
index 718e6682..21d76e05 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,35 @@
 CHANGELOG
 =========
 
+Version 71 (January 4, 2025)
+----------------------------
+
+Upgrades
+
+* Roundcube upgraded to version 1.6.9.
+* Z-Push upgraded to version 2.7.5.
+
+Automated Maintenance
+
+* Daily automated tasks are now run at 1am in the box's timezone and full backups are now restricted to running only on Saturdays and Sundays at that time.
+* Backups now exclude the owncloud-backup folder so that we're not backing up backups.
+* Old TLS certificates are now automatically deleted to improve control panel performance.
+
+Setup
+
+* Fixed broken setup if SSH was configured to listen on multiple ports.
+* Ubuntu MOTD advertisements are now disabled.
+* Fixed missing Roundcube dependency package if NextCloud isn't installed.
+
+Control Panel
+
+* Improved status checks for secondary nameservers.
+* Spamhaus is now queried for the box's IPv6 address also.
+* DSA and EC private keys are now accepted for TLS certificates.
+* Timeouts for loading slow control panel pages are reduced.
+
+And other minor fixes.
+
 Version 70 (August 15, 2024)
 ----------------------------
 
@@ -73,7 +102,7 @@ Version 64 (September 2, 2023)
 * Fixed backups to work with the latest duplicity package which was not backwards compatible.
 * Fixed setting B2 as a backup target with a slash in the application key.
 * Turned off OpenDMARC diagnostic reports sent in response to incoming mail.
-* Fixed some crashes when using an unrelased version of Mail-in-a-Box.
+* Fixed some crashes when using an unreleased version of Mail-in-a-Box.
 * Added z-push administration scripts.
 
 Version 63 (July 27, 2023)
@@ -1129,7 +1158,7 @@ Control panel:
 
 System:
 * The munin system monitoring tool is now installed and accessible at /admin/munin.
-* ownCloud updated to version 8.0.4. The ownCloud installation step now is reslient to download problems. The ownCloud configuration file is now stored in STORAGE_ROOT to fix loss of data when moving STORAGE_ROOT to a new machine.
+* ownCloud updated to version 8.0.4. The ownCloud installation step now is resilient to download problems. The ownCloud configuration file is now stored in STORAGE_ROOT to fix loss of data when moving STORAGE_ROOT to a new machine.
 * The setup scripts now run `apt-get update` prior to installing anything to ensure the apt database is in sync with the packages actually available.
 
 
@@ -1167,7 +1196,7 @@ DNS:
 * Internationalized Domain Names (IDNs) should now work in email. If you had custom DNS or custom web settings for internationalized domains, check that they are still working.
 * It is now possible to set multiple TXT and other types of records on the same domain in the control panel.
 * The custom DNS API was completely rewritten to support setting multiple records of the same type on a domain. Any existing client code using the DNS API will have to be rewritten. (Existing code will just get 404s back.)
-* On some systems the `nsd` service failed to start if network inferfaces were not ready.
+* On some systems the `nsd` service failed to start if network interfaces were not ready.
 
 System / Control Panel:
 
diff --git a/conf/nginx-primaryonly.conf b/conf/nginx-primaryonly.conf
index b361a7b2..36f62aab 100644
--- a/conf/nginx-primaryonly.conf
+++ b/conf/nginx-primaryonly.conf
@@ -8,7 +8,6 @@
 	rewrite ^/admin/munin$ /admin/munin/ redirect;
 	location /admin/ {
 		proxy_pass http://127.0.0.1:10222/;
-		proxy_read_timeout 600s;
 		proxy_set_header X-Forwarded-For $remote_addr;
 		add_header X-Frame-Options "DENY";
 		add_header X-Content-Type-Options nosniff;
diff --git a/management/backup.py b/management/backup.py
index aae6c00b..ac16eade 100755
--- a/management/backup.py
+++ b/management/backup.py
@@ -9,6 +9,7 @@
 
 import os, os.path, re, datetime, sys
 import dateutil.parser, dateutil.relativedelta, dateutil.tz
+from datetime import date
 import rtyaml
 from exclusiveprocess import Lock
 
@@ -157,6 +158,8 @@ def should_force_full(config, env):
 	# since the last full backup is greater than half the size
 	# of that full backup.
 	inc_size = 0
+	# Check if day of week is a weekend day
+	weekend = date.today().weekday()>=5
 	for bak in backup_status(env)["backups"]:
 		if not bak["full"]:
 			# Scan through the incremental backups cumulating
@@ -165,12 +168,14 @@ def should_force_full(config, env):
 		else:
 			# ...until we reach the most recent full backup.
 			# Return if we should to a full backup, which is based
-			# on the size of the increments relative to the full
-			# backup, as well as the age of the full backup.
-			if inc_size > .5*bak["size"]:
-				return True
-			if dateutil.parser.parse(bak["date"]) + datetime.timedelta(days=config["min_age_in_days"]*10+1) < datetime.datetime.now(dateutil.tz.tzlocal()):
-				return True
+			# on whether it is a weekend day, the size of the
+			# increments relative to the full backup, as well as
+			# the age of the full backup.
+			if weekend:
+				if inc_size > .5*bak["size"]:
+					return True
+				if dateutil.parser.parse(bak["date"]) + datetime.timedelta(days=config["min_age_in_days"]*10+1) < datetime.datetime.now(dateutil.tz.tzlocal()):
+					return True
 			return False
 	else:
 		# If we got here there are no (full) backups, so make one.
@@ -320,6 +325,7 @@ def perform_backup(full_backup):
 			"--verbosity", "warning", "--no-print-statistics",
 			"--archive-dir", backup_cache_dir,
 			"--exclude", backup_root,
+			"--exclude", os.path.join(env["STORAGE_ROOT"], "owncloud-backup"),
 			"--volsize", "250",
 			"--gpg-options", "'--cipher-algo=AES256'",
 			"--allow-source-mismatch",
@@ -399,6 +405,7 @@ def run_duplicity_verification():
 		"--compare-data",
 		"--archive-dir", backup_cache_dir,
 		"--exclude", backup_root,
+		"--exclude", os.path.join(env["STORAGE_ROOT"], "owncloud-backup"),
 		*get_duplicity_additional_args(env),
 		get_duplicity_target_url(config),
 		env["STORAGE_ROOT"],
diff --git a/management/ssl_certificates.py b/management/ssl_certificates.py
index c9f1126c..8c1b841e 100755
--- a/management/ssl_certificates.py
+++ b/management/ssl_certificates.py
@@ -14,7 +14,7 @@ def get_ssl_certificates(env):
 	# that the certificates are good for to the best certificate for
 	# the domain.
 
-	from cryptography.hazmat.primitives.asymmetric.rsa import RSAPrivateKey
+	from cryptography.hazmat.primitives.asymmetric import dsa, rsa, ec
 	from cryptography.x509 import Certificate
 
 	# The certificates are all stored here:
@@ -59,13 +59,15 @@ def get_ssl_certificates(env):
 			# Not a valid PEM format for a PEM type we care about.
 			continue
 
-		# Is it a private key?
-		if isinstance(pem, RSAPrivateKey):
-			private_keys[pem.public_key().public_numbers()] = { "filename": fn, "key": pem }
-
 		# Is it a certificate?
 		if isinstance(pem, Certificate):
 			certificates.append({ "filename": fn, "cert": pem })
+		# It is a private key
+		elif (isinstance(pem, rsa.RSAPrivateKey)
+			or isinstance(pem, dsa.DSAPrivateKey)
+			or isinstance(pem, ec.EllipticCurvePrivateKey)):
+			private_keys[pem.public_key().public_numbers()] = { "filename": fn, "key": pem }
+
 
 	# Process the certificates.
 	domains = { }
@@ -505,7 +507,7 @@ def check_certificate(domain, ssl_certificate, ssl_private_key, warn_if_expiring
 	# Check that the ssl_certificate & ssl_private_key files are good
 	# for the provided domain.
 
-	from cryptography.hazmat.primitives.asymmetric.rsa import RSAPrivateKey
+	from cryptography.hazmat.primitives.asymmetric import rsa, dsa, ec
 	from cryptography.x509 import Certificate
 
 	# The ssl_certificate file may contain a chain of certificates. We'll
@@ -539,7 +541,9 @@ def check_certificate(domain, ssl_certificate, ssl_private_key, warn_if_expiring
 		except ValueError as e:
 			return (f"The private key file {ssl_private_key} is not a private key file: {e!s}", None)
 
-		if not isinstance(priv_key, RSAPrivateKey):
+		if (not isinstance(priv_key, rsa.RSAPrivateKey)
+			and not isinstance(priv_key, dsa.DSAPrivateKey)
+			and not isinstance(priv_key, ec.EllipticCurvePrivateKey)):
 			return ("The private key file %s is not a private key file." % ssl_private_key, None)
 
 		if priv_key.public_key().public_numbers() != cert.public_key().public_numbers():
@@ -639,7 +643,7 @@ def load_pem(pem):
 		msg = "File is not a valid PEM-formatted file."
 		raise ValueError(msg)
 	pem_type = pem_type.group(1)
-	if pem_type in {b"RSA PRIVATE KEY", b"PRIVATE KEY"}:
+	if pem_type.endswith(b"PRIVATE KEY"):
 		return serialization.load_pem_private_key(pem, password=None, backend=default_backend())
 	if pem_type == b"CERTIFICATE":
 		return load_pem_x509_certificate(pem, default_backend())
diff --git a/management/status_checks.py b/management/status_checks.py
index 51f8e631..68755cb7 100755
--- a/management/status_checks.py
+++ b/management/status_checks.py
@@ -282,26 +282,45 @@ def run_network_checks(env, output):
 	# The user might have ended up on an IP address that was previously in use
 	# by a spammer, or the user may be deploying on a residential network. We
 	# will not be able to reliably send mail in these cases.
-	
-	# See https://www.spamhaus.org/news/article/807/using-our-public-mirrors-check-your-return-codes-now. for
-	# information on spamhaus return codes
 	rev_ip4 = ".".join(reversed(env['PUBLIC_IP'].split('.')))
 	zen = query_dns(rev_ip4+'.zen.spamhaus.org', 'A', nxdomain=None)
+	evaluate_spamhaus_lookup(env['PUBLIC_IP'], 'IPv4', rev_ip4, output, zen)
+
+	if not env['PUBLIC_IPV6']:
+		return
+
+	from ipaddress import IPv6Address
+
+	rev_ip6 = ".".join(reversed(IPv6Address(env['PUBLIC_IPV6']).exploded.split(':')))
+	zen = query_dns(rev_ip6+'.zen.spamhaus.org', 'A', nxdomain=None)
+	evaluate_spamhaus_lookup(env['PUBLIC_IPV6'], 'IPv6', rev_ip6, output, zen)
+
+
+def evaluate_spamhaus_lookup(lookupaddress, lookuptype, lookupdomain, output, zen):
+	# See https://www.spamhaus.org/news/article/807/using-our-public-mirrors-check-your-return-codes-now. for
+	# information on spamhaus return codes
 	if zen is None:
-		output.print_ok("IP address is not blacklisted by zen.spamhaus.org.")
+		output.print_ok(f"{lookuptype} address is not blacklisted by zen.spamhaus.org.")
 	elif zen == "[timeout]":
-		output.print_warning("Connection to zen.spamhaus.org timed out. Could not determine whether this box's IP address is blacklisted. Please try again later.")
+		output.print_warning(f"""Connection to zen.spamhaus.org timed out. Could not determine whether this box's
+		 	{lookuptype} address is blacklisted. Please try again later.""")
 	elif zen == "[Not Set]":
-		output.print_warning("Could not connect to zen.spamhaus.org. Could not determine whether this box's IP address is blacklisted. Please try again later.")
+		output.print_warning(f"""Could not connect to zen.spamhaus.org. Could not determine whether this box's
+			{lookuptype} address is blacklisted. Please try again later.""")
 	elif zen == "127.255.255.252":
-		output.print_warning("Incorrect spamhaus query: %s. Could not determine whether this box's IP address is blacklisted." % (rev_ip4+'.zen.spamhaus.org'))
+		output.print_warning(f"""Incorrect spamhaus query: {lookupdomain + '.zen.spamhaus.org'}. Could not determine whether
+		 	this box's {lookuptype} address is blacklisted.""")
 	elif zen == "127.255.255.254":
-		output.print_warning("Mail-in-a-Box is configured to use a public DNS server. This is not supported by spamhaus. Could not determine whether this box's IP address is blacklisted.")
+		output.print_warning(f"""Mail-in-a-Box is configured to use a public DNS server. This is not supported by
+			spamhaus. Could not determine whether this box's {lookuptype} address is blacklisted.""")
 	elif zen == "127.255.255.255":
-		output.print_warning("Too many queries have been performed on the spamhaus server. Could not determine whether this box's IP address is blacklisted.")
+		output.print_warning(f"""Too many queries have been performed on the spamhaus server. Could not determine
+		 	whether this box's {lookuptype} address is blacklisted.""")
 	else:
-		output.print_error("""The IP address of this machine {} is listed in the Spamhaus Block List (code {}),
-			which may prevent recipients from receiving your email. See http://www.spamhaus.org/query/ip/{}.""".format(env['PUBLIC_IP'], zen, env['PUBLIC_IP']))
+		output.print_error(f"""The {lookuptype} address of this machine {lookupaddress} is listed in the Spamhaus Block
+		 	List (code {zen}), which may prevent recipients from receiving your email. See
+		 	http://www.spamhaus.org/query/ip/{lookupaddress}.""")
+
 
 def run_domain_checks(rounded_time, env, output, pool, domains_to_check=None):
 	# Get the list of domains we handle mail for.
@@ -521,6 +540,8 @@ def check_dns_zone(domain, env, output, dns_zonefiles):
 	# Check that each custom secondary nameserver resolves the IP address.
 
 	if custom_secondary_ns and not probably_external_dns:
+		SOARecord = query_dns(domain, "SOA", at=env['PUBLIC_IP'])# Explicitly ask the local dns server.
+
 		for ns in custom_secondary_ns:
 			# We must first resolve the nameserver to an IP address so we can query it.
 			ns_ips = query_dns(ns, "A")
@@ -530,15 +551,36 @@ def check_dns_zone(domain, env, output, dns_zonefiles):
 			# Choose the first IP if nameserver returns multiple
 			ns_ip = ns_ips.split('; ')[0]
 
+			checkSOA = True
+
 			# Now query it to see what it says about this domain.
 			ip = query_dns(domain, "A", at=ns_ip, nxdomain=None)
 			if ip == correct_ip:
-				output.print_ok("Secondary nameserver %s resolved the domain correctly." % ns)
+				output.print_ok(f"Secondary nameserver {ns} resolved the domain correctly.")
 			elif ip is None:
-				output.print_error("Secondary nameserver %s is not configured to resolve this domain." % ns)
+				output.print_error(f"Secondary nameserver {ns} is not configured to resolve this domain.")
+				# No need to check SOA record if not configured as nameserver
+				checkSOA = False
+			elif ip == '[timeout]':
+				output.print_error(f"Secondary nameserver {ns} did not resolve this domain, result: {ip}")
+				checkSOA = False
 			else:
 				output.print_error(f"Secondary nameserver {ns} is not configured correctly. (It resolved this domain as {ip}. It should be {correct_ip}.)")
 
+			if checkSOA:
+				# Check that secondary DNS server is synchronized with our primary DNS server. Simplified by checking the SOA record which has a version number
+				SOASecondary = query_dns(domain, "SOA", at=ns_ip)
+
+				if SOARecord == SOASecondary:
+					output.print_ok(f"Secondary nameserver {ns} has consistent SOA record.")
+				elif SOARecord == '[Not Set]':
+					output.print_error(f"Secondary nameserver {ns} has no SOA record configured.")
+				elif SOARecord == '[timeout]':
+					output.print_error(f"Secondary nameserver {ns} timed out on checking SOA record.")
+				else:
+					output.print_error(f"""Secondary nameserver {ns} has inconsistent SOA record (primary: {SOARecord} versus secondary: {SOASecondary}).
+					Check that synchronization between secondary and primary DNS servers is properly set-up.""")
+
 def check_dns_zone_suggestions(domain, env, output, dns_zonefiles, domains_with_a_records):
 	# Warn if a custom DNS record is preventing this or the automatic www redirect from
 	# being served.
diff --git a/management/utils.py b/management/utils.py
index 397f124d..1dbbeb7e 100644
--- a/management/utils.py
+++ b/management/utils.py
@@ -189,6 +189,7 @@ def get_ssh_port():
 
 def get_ssh_config_value(parameter_name):
 	# Returns ssh configuration value for the provided parameter
+	import subprocess
 	try:
 		output = shell('check_output', ['sshd', '-T'])
 	except FileNotFoundError:
diff --git a/setup/bootstrap.sh b/setup/bootstrap.sh
index 00d1b214..00b64c13 100644
--- a/setup/bootstrap.sh
+++ b/setup/bootstrap.sh
@@ -23,7 +23,7 @@ if [ -z "$TAG" ]; then
 	if [ "$UBUNTU_VERSION" == "Ubuntu 22.04 LTS" ]; then
 		# This machine is running Ubuntu 22.04, which is supported by
 		# Mail-in-a-Box versions 60 and later.
-		TAG=v70
+		TAG=v71
 	elif [ "$UBUNTU_VERSION" == "Ubuntu 18.04 LTS" ]; then
 		# This machine is running Ubuntu 18.04, which is supported by
 		# Mail-in-a-Box versions 0.40 through 5x.
diff --git a/setup/management.sh b/setup/management.sh
index fb359cd3..d8032312 100755
--- a/setup/management.sh
+++ b/setup/management.sh
@@ -116,7 +116,7 @@ minute=$((RANDOM % 60))  # avoid overloading mailinabox.email
 cat > /etc/cron.d/mailinabox-nightly << EOF;
 # Mail-in-a-Box --- Do not edit / will be overwritten on update.
 # Run nightly tasks: backup, status checks.
-$minute 3 * * *	root	(cd $PWD && management/daily_tasks.sh)
+$minute 1 * * *	root	(cd $PWD && management/daily_tasks.sh)
 EOF
 
 # Start the management server.
diff --git a/setup/ssl.sh b/setup/ssl.sh
index 19a0c048..0aa9b136 100755
--- a/setup/ssl.sh
+++ b/setup/ssl.sh
@@ -96,3 +96,12 @@ fi
 if [ ! -f "$STORAGE_ROOT/ssl/dh2048.pem" ]; then
 	openssl dhparam -out "$STORAGE_ROOT/ssl/dh2048.pem" 2048
 fi
+
+# Cleanup expired SSL certificates from $STORAGE_ROOT/ssl daily
+cat > /etc/cron.daily/mailinabox-ssl-cleanup << EOF;
+#!/bin/bash
+# Mail-in-a-Box
+# Cleanup expired SSL certificates
+$(pwd)/tools/ssl_cleanup
+EOF
+chmod +x /etc/cron.daily/mailinabox-ssl-cleanup
diff --git a/setup/webmail.sh b/setup/webmail.sh
index 4591119c..a203cb8c 100644
--- a/setup/webmail.sh
+++ b/setup/webmail.sh
@@ -23,7 +23,7 @@ echo "Installing Roundcube (webmail)..."
 apt_install \
 	dbconfig-common \
 	php"${PHP_VER}"-cli php"${PHP_VER}"-sqlite3 php"${PHP_VER}"-intl php"${PHP_VER}"-common php"${PHP_VER}"-curl php"${PHP_VER}"-imap \
-	php"${PHP_VER}"-gd php"${PHP_VER}"-pspell php"${PHP_VER}"-mbstring libjs-jquery libjs-jquery-mousewheel libmagic1 \
+	php"${PHP_VER}"-gd php"${PHP_VER}"-pspell php"${PHP_VER}"-mbstring php"${PHP_VER}"-xml libjs-jquery libjs-jquery-mousewheel libmagic1 \
 	sqlite3
 
 # Install Roundcube from source if it is not already present or if it is out of date.
@@ -36,8 +36,8 @@ apt_install \
 #   https://github.com/mstilkerich/rcmcarddav/releases
 # The easiest way to get the package hashes is to run this script and get the hash from
 # the error message.
-VERSION=1.6.8
-HASH=00586f5163b3f6c1b0798be745982e3547b1b24a
+VERSION=1.6.9
+HASH=b63f74209cf287402f6f44b85877388899261f3c
 PERSISTENT_LOGIN_VERSION=bde7b6840c7d91de627ea14e81cf4133cbb3c07a # version 5.3
 HTML5_NOTIFIER_VERSION=68d9ca194212e15b3c7225eb6085dbcf02fd13d7 # version 0.6.4+
 CARDDAV_VERSION=4.4.3
diff --git a/setup/zpush.sh b/setup/zpush.sh
index 5c3e5b30..397ee4a9 100755
--- a/setup/zpush.sh
+++ b/setup/zpush.sh
@@ -22,8 +22,8 @@ apt_install \
 phpenmod -v "$PHP_VER" imap
 
 # Copy Z-Push into place.
-VERSION=2.7.4
-TARGETHASH=78744d56b8799d9828ec8f99a12c1af4e9f9239b
+VERSION=2.7.5
+TARGETHASH=f0b0b06e255f3496173ab9d28a4f2d985184720e
 needs_update=0 #NODOC
 if [ ! -f /usr/local/lib/z-push/version ]; then
 	needs_update=1 #NODOC
@@ -110,4 +110,6 @@ restart_service php"$PHP_VER"-fpm
 
 # Fix states after upgrade
 
-hide_output php"$PHP_VER" /usr/local/lib/z-push/z-push-admin.php -a fixstates
+if [ $needs_update == 1 ]; then
+	hide_output php"$PHP_VER" /usr/local/lib/z-push/z-push-admin.php -a fixstates
+fi
diff --git a/tools/ssl_cleanup b/tools/ssl_cleanup
new file mode 100755
index 00000000..5adfa1be
--- /dev/null
+++ b/tools/ssl_cleanup
@@ -0,0 +1,17 @@
+#!/bin/bash
+# Cleanup SSL certificates which expired more than 7 days ago from $STORAGE_ROOT/ssl and move them to $STORAGE_ROOT/ssl.expired
+
+source /etc/mailinabox.conf
+shopt -s extglob
+
+retain_after="$(date --date="7 days ago" +%Y%m%d)"
+
+mkdir -p $STORAGE_ROOT/ssl.expired
+for file in $STORAGE_ROOT/ssl/*-+([0-9])-+([0-9a-f]).pem; do
+  pem="$(basename "$file")"
+  not_valid_after="$(cut -d- -f1 <<< "${pem: -21}")"
+
+  if [ "$not_valid_after" -lt "$retain_after" ]; then
+    mv "$file" "$STORAGE_ROOT/ssl.expired/${pem}"
+  fi
+done