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by _jal
2212 days ago
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In my experience, ATT is the worst. They've been blocking me for well over a decade. They're the only provider who has ignored every contact attempt I've made. I don't care, from my perspective they're irrelevant. The last person I communicated who used their MX died recently, and otherwise ATT can bite me. But in a fit of annoyance several years ago I did configure my servers to deliver a heartfelt custom 550 response to ATT MXes. |
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EDIT: https://www.att.com/esupport/postmaster/digital-signature/ checked the AT&T support about delievery. Seems like they do use Yahoo these days.