Does nameserver latency affect email speed?

Yes, if a receiver takes too long to query your MX or SPF records, it can delay delivery or even cause temporary failure.

Why are some nameservers slower than others?

Latency is affected by the physical distance to the resolver and the load/performance of the DNS provider's infrastructure.

Common practice is to have at least two, preferably hosted on different networks or by different providers for redundancy.

It typically means registrar NS settings and zone hosting do not match, which can make updates seem ignored.

At least two, ideally in separate networks, to improve DNS resilience and availability.

Nameserver Tester measures the latency of your authoritative DNS nodes to identify connectivity bottlenecks.

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Nameserver Tester measures the latency of your authoritative DNS nodes to identify connectivity bottlenecks.

AI-written reply suggestions

Automated follow-up sequences

Campaign open & click tracking

Unlimited connected accounts