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A comment on Show HN: DMARC Checker.

Re:Show HN: DMARC Checker by yolo4553 on Wednesday February 21, 2024 @09:09AM (#39453977)
Hmm, am I seeing this correctly that the system does receive emails only via IPv4 and no IPv6? This would make the SPF check somewhat misleading as it only checks one option.
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Re:Show HN: DMARC Checker by awulf on Wednesday February 21, 2024 @11:20AM (#39455749)
You are correct, the mail server is currently configured to only receive emails via IPv4. This setup is not uncommon as most major email providers have IPv4-only MX records (with Gmail and Yandex Mail being rare exceptions that support IPv6).

It might be a good idea to provide a different email address whose mail server explicitly requires IPv6. I'll think about it. Thanks for bringing it up.

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