AVE17 LTDNotes on work we actually did.https://ave17.com/blog2026-08-27T00:00:00ZAVE17 LTDhello@ave17.comAll rights reserved. AVE17 LTD, company number 17254143.Mail that arrives: everything internet.nl checks, and whyhttps://ave17.com/blog/mail-that-arrives2026-08-27T00:00:00Z2026-08-27T00:00:00ZA mail server that sends is easy. A mail server whose mail is accepted, and cannot be forged, is a dozen records that have to agree with each other. Here is every one of them, on our own domains, and what each is actually for.