If you provide email services to your customers, you can save yourself a lot of grief by ensuring SPF, DMARC & DKIM are configured on their accounts.
Bouncebacks are your friend, and they really aren't difficult to read.
Error 4.5.1
Google, Hotmail, and many others now require all three to be enabled for email sender authentication.
dick_turpin :essex: :cc:
npub1al…q79us
2026-03-05 10:53:26 UTC
Author Public Key
npub1ald4gujwsnmsu6vye35cpm9klt0m42vtcr6xkdez6yt9x96r0ejq3q79usSeen on
wss://relay.momostr.pinkPublished at
2026-03-05 10:53:26 UTCEvent JSON
{
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"pubkey": "efdb54724e84f70e6984cc6980ecb6fadfbaa98bc0f46b3722d1165317437e64",
"created_at": 1772708006,
"kind": 1,
"tags": [
[
"proxy",
"https://mastodon.org.uk/@dick_turpin/116176191901045413",
"web"
],
[
"proxy",
"https://mastodon.org.uk/users/dick_turpin/statuses/116176191901045413",
"activitypub"
],
[
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[
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[
"-"
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],
"content": "If you provide email services to your customers, you can save yourself a lot of grief by ensuring SPF, DMARC \u0026 DKIM are configured on their accounts.\n\nBouncebacks are your friend, and they really aren't difficult to read.\nError 4.5.1\n\nGoogle, Hotmail, and many others now require all three to be enabled for email sender authentication.",
"sig": "38ba9b85cee719cbce8c6df81451547b03eee0106b5e61ea85c5cfe38683cac67551263f2e4a75b80ae3df0c01beb38b0a3ea57bc624ad2efc5e9ca599998058"
}