Forward-confirmed reverse DNS (FCrDNS) verifies that the PTR hostname resolves back
to the original sender IP. This double-check helps establish sender legitimacy.
{#if senderIp}
Original Sender IP:{senderIp}
{/if}
{#if hasForwardRecords}
PTR Hostname(s):
{#each ptrRecords as ptr}
{ptr}
{/each}
Forward Resolution (A/AAAA):
{#each ptrForwardRecords as ip}
{#if senderIp && ip === senderIp}
Match
{:else}
Different
{/if}
{ip}
{/each}
{#if fcrDnsIsValid}
Success: Forward-confirmed reverse DNS is properly configured.
The PTR hostname resolves back to the sender IP.
{:else}
Warning: The PTR hostname does not resolve back to the sender
IP. This may impact deliverability.
{/if}
{:else}
Error: PTR hostname(s) found but could not resolve to any IP
addresses. Check your DNS configuration.