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Tag: senderid

… until it stops moving

Nothing is impossible to kill. It’s just that sometimes after you kill something you have to keep shooting it until it stops moving.Mira Grant, Feed It’s getting to the time of year when I can get away with some horror movie metaphors. Today, things that are dead. 1. ADSP ADSP was a domain repudiation scheme […]

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Hotmail moves to SPF authentication

Hotmail has recently stopped using Sender ID for email authentication and switched to authenticating with SPF. The protocol differences between SenderID and SPF were subtle and most senders who were getting a pass at Hotmail were already publishing SPF records. From an email in my inbox from September: Authentication-Results: hotmail.com; sender-id=pass (sender IP is 65.55.240.72) […]

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SPF records: not really all that important

I’ve been working through some Hotmail issues with a client over the last few months. One of the things that has become clear to me is how little Hotmail actually does with SPF records. In fact, Hotmail completely ignored my client’s SPF record and continued to deliver email into the inbox. This isn’t just a […]

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