How long to wait before sending email after fixing DNS records after a DNS provider change?
Summary
What email marketers say5Marketer opinions
Email marketer from Reddit user u/DNS_Query shares that it's safe to send emails after 24 hours after changing the DNS records, but strongly recommend to monitor the key DNS records to ensure they are propogating correctly and aren't failing authentication.
Email marketer from MXToolbox recommends waiting 48-72 hours for complete DNS propagation after making changes, especially for critical records like SPF and DKIM. They also advise monitoring DNS records during this period to ensure they're updating correctly.
Email marketer from StackOverflow answers that it will depend on the TTL of the old records, and once that time has passed you should be able to send safely.
Email marketer from Namecheap responds that DNS propagation usually takes 4-8 hours but can take up to 24-48 hours in some instances, depending on the TTL settings and your ISP. They suggest using online tools to verify propagation across different locations.
Email marketer from Neil Patel's Blog explains that DNS propagation can take anywhere from 24-72 hours, but sometimes it's faster. They recommend checking DNS records to ensure they've updated before sending emails to avoid deliverability issues.
What the experts say3Expert opinions
Expert from Email Geeks explains that the NXDOMAIN will only be cached if someone got that response, so the time you sent email after the DNS was broken will affect it. If no mail was sent, all is good.
Expert from Email Geeks shares to check the SOA record to see how long the cache time is, which is the upper limit on pain after the records were fixed.
Expert from Word to the Wise explains that the time to wait depends on the TTL settings. Shorter TTLs mean faster propagation. It's crucial to monitor DNS records to confirm they've updated correctly before resuming sending.
What the documentation says3Technical articles
Documentation from DigitalOcean answers that most DNS servers respect TTL values. Low TTLs cause faster propagation than High TTLs. Also they recommend to check your DNS records to confirm propagation before sending emails.
Documentation from Cloudflare states that while their DNS changes are typically fast, complete propagation across the internet can still take up to 24-48 hours due to caching by ISPs. They suggest verifying the new records using command-line tools or online DNS checkers.
Documentation from Google Workspace Admin Help explains that DNS changes can take up to 72 hours to propagate fully. They advise checking DNS records using Google Admin Toolbox Dig to confirm updates before sending emails.