Post #1191132
2026-04-13 18:10 UTC
@lluad @Paul_Taylor ah, then it seems odd that DMARC would be a requirement to deliver mail
Replies (1)
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@lluad@mastodon.ie 2026-04-13 18:17
@drbrain @Paul_Taylor It’s not a general requirement. If you’re sending “bulk” mail then some large consumer ISPs (Google, Yahoo, that sort) require you to have DMARC records in place or your mail is likely to be rejected. “Bulk” doesn’t have a hard volume cut off, for good operational reasons, but unless you’re sending several thousand a month that’s not you. The only real requirement for modern email is DKIM signatures, ideally aligned with the From: header. Some outliers want SPF too.