diff --git a/CHANGELOG.md b/CHANGELOG.md
index fb146e80..579ab9f0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,7 @@ In Development
 
 * Incoming emails with SPF/DKIM/DMARC failures now have a higher spam score, and these messages are more likely to appear in the junk folder, since they are often spam/phishing.
 * A new Download button in the control panel's External DNS page can be used to download the required DNS records in zonefile format.
-* Blackblaze is now a supported backup protocol.
+* Backblaze B2 is now a supported backup protocol.
 * Fixed the problem when the control panel would report DNS entries as Not Set by increasing a bind query limit.
 * Fixed a control panel startup bug on some systems.
 * Fixed the MTA-STS policy file's line endings.
diff --git a/management/dns_update.py b/management/dns_update.py
index 299f7606..c820a681 100755
--- a/management/dns_update.py
+++ b/management/dns_update.py
@@ -471,14 +471,14 @@ def write_nsd_zone(domain, zonefile, records, env, force):
 
 	zone = """
 $ORIGIN {domain}.
-$TTL 1800           ; default time to live
+$TTL 86400          ; default time to live
 
 @ IN SOA ns1.{primary_domain}. hostmaster.{primary_domain}. (
            __SERIAL__     ; serial number
            7200     ; Refresh (secondary nameserver update interval)
-           1800     ; Retry (when refresh fails, how often to try again)
+           86400    ; Retry (when refresh fails, how often to try again)
            1209600  ; Expire (when refresh fails, how long secondary nameserver will keep records around anyway)
-           1800     ; Negative TTL (how long negative responses are cached)
+           86400    ; Negative TTL (how long negative responses are cached)
            )
 """
 
diff --git a/management/templates/users.html b/management/templates/users.html
index f23adad2..13f26a27 100644
--- a/management/templates/users.html
+++ b/management/templates/users.html
@@ -41,7 +41,7 @@
   </div>
 </form>
 <ul style="margin-top: 1em; padding-left: 1.5em; font-size: 90%;">
-  <li>Passwords must be at least eight characters consisting of English lettters and numbers only. For best results, <a href="#" onclick="return generate_random_password()">generate a random password</a>.</li>
+  <li>Passwords must be at least eight characters consisting of English letters and numbers only. For best results, <a href="#" onclick="return generate_random_password()">generate a random password</a>.</li>
   <li>Use <a href="#" onclick="return show_panel('aliases')">aliases</a> to create email addresses that forward to existing accounts.</li>
   <li>Administrators get access to this control panel.</li>
   <li>User accounts cannot contain any international (non-ASCII) characters, but <a href="#" onclick="return show_panel('aliases');">aliases</a> can.</li>