The RFC claims underscores are removed to promote interoperability. I suspect th... | Hacker News

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		criddell on May 28, 2024 \| parent \| context \| favorite \| on: My computer has an underscore in its name, and I h... The RFC claims underscores are removed to promote interoperability. I suspect that clause harms interoperability more than it helps.

fanf2 on May 28, 2024 [–]

The logic is that a large proportion of mail servers will reject messages as specified in that paragraph, so if you want to avoid mysterious delivery failures, your mail software and its configuration should follow suit - better to discover the problem sooner rather than later.

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