A lot of services *will* spambucket mail coming from a domain without SPF, but often won't outright *reject* it, because SPF was a retrofit and they wanted back-compat for postmasters that couldn't be assed to set it up. Not that they *shouldn't* codify it in the RFCs as a SHOULD eventually, just that they haven't chosen to do that yet for Internet Politics reasons.
Explicitly telling MTAs "this domain shouldn't be allowed to send email" on the other hand removes all ambiguity, regardless of future RFCs.
Emelia/Emi
npub18a…7pj7v
2025-07-11 23:41:41 UTC
in reply to nevent1q…4a43
Author Public Key
npub18awg073vadjxw7vst9v3dduvxjulc7x7jjyskvqkjfa99xn28zdqj7pj7vSeen on
wss://relay.momostr.pinkPublished at
2025-07-11 23:41:41 UTCEvent JSON
{
"id": "a3e04cd5e587677c0eb3b86ec32dc0cdfb21db1e072cec89933ced768673fab0",
"pubkey": "3f5c87fa2ceb64677990595916b78c34b9fc78de94890b3016927a529a6a389a",
"created_at": 1752277301,
"kind": 1,
"tags": [
[
"p",
"8ab44a84fb757fea3c983e68a9bcc8e331fa49ed99cfcfd06a4499d542eae93c"
],
[
"e",
"c6d1aa645ffae9a0715d96d72d4896304ef00da190c9c81570538d9654c4eca4",
"",
"root",
"3f5c87fa2ceb64677990595916b78c34b9fc78de94890b3016927a529a6a389a"
],
[
"e",
"dbc46f442e2dbe24d71ae18d4b5a398ca621da9dc9f5219395c821d70ef5dd0f",
"",
"reply",
"8ab44a84fb757fea3c983e68a9bcc8e331fa49ed99cfcfd06a4499d542eae93c"
],
[
"p",
"3f5c87fa2ceb64677990595916b78c34b9fc78de94890b3016927a529a6a389a"
],
[
"proxy",
"https://tech.lgbt/@becomethewaifu/114837245214462901",
"web"
],
[
"proxy",
"https://tech.lgbt/users/becomethewaifu/statuses/114837245214462901",
"activitypub"
],
[
"L",
"pink.momostr"
],
[
"l",
"pink.momostr.activitypub:https://tech.lgbt/users/becomethewaifu/statuses/114837245214462901",
"pink.momostr"
],
[
"-"
]
],
"content": "A lot of services *will* spambucket mail coming from a domain without SPF, but often won't outright *reject* it, because SPF was a retrofit and they wanted back-compat for postmasters that couldn't be assed to set it up. Not that they *shouldn't* codify it in the RFCs as a SHOULD eventually, just that they haven't chosen to do that yet for Internet Politics reasons.\n\nExplicitly telling MTAs \"this domain shouldn't be allowed to send email\" on the other hand removes all ambiguity, regardless of future RFCs.",
"sig": "ae5377dc7894a2f59d8350fe000d67e217d3614357a3528e240868f1c0aa1ee178e3649bcb1c8881732921eb47ff11b0aa1a8538f0a8aaf1e22c7db185a5963f"
}