DNS & Deliverability Correlations

How fast your DNS responds matters. This section explains that slow or failing DNS lookups for your domain (or your rDNS) make you look "unprofessional" and "spammy" to mailbox providers, which will hurt your deliverability.

10 questions in this topic

Can DNS speed or latency affect inboxing? What happens when DNS lookups time out during delivery? How do DNS errors contribute to throttling or retries? What DNS issues commonly cause “no reverse DNS” rejections? How does DNS hosting location affect delivery speed? How does DNS TTL tuning improve email reliability? Can DNS outages lead to false bounce spikes? How do mail filters cache DNS data for spam analysis? What’s the connection between DNS trust and sender reputation? How can DNS transparency influence anti-spoofing trust models?

Questions about DNS & Deliverability Correlations