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#MX Records

MX (mail exchanger) records are DNS records that tell other servers where to deliver e-mail for a domain. Each record has a priority value, and lower numbers are tried first. Wrong or missing MX records mean that incoming mail bounces or disappears, while stale records can send mail to an old provider. Domains that never receive mail can publish a null MX record to say so clearly. The articles under this tag explain how MX records work and how to check them.

Postmaster and Abuse Mailboxes: Why Every Domain Needs Them01.10.2026 · 7 Min. Lesezeit

Postmaster and Abuse Mailboxes: Why Every Domain Needs Them

Postmaster, abuse and other role addresses let mail servers and people report problems with your domain. Learn which ones you need and how to…

Catch-All Email Addresses: Pros, Cons and the Spam Problem01.10.2026 · 7 Min. Lesezeit

Catch-All Email Addresses: Pros, Cons and the Spam Problem

A catch-all mailbox accepts mail sent to any address at your domain. See the benefits, the spam and security costs, and the safer alternatives…

Is Your Email Encrypted? TLS and STARTTLS Explained Simply24.09.2026 · 8 Min. Lesezeit

Is Your Email Encrypted? TLS and STARTTLS Explained Simply

Most e-mail is encrypted between servers with TLS, but not always and not end to end. Learn how STARTTLS works, how to check it…

How to Protect Parked and Unused Domains from Email Abuse22.09.2026 · 8 Min. Lesezeit

How to Protect Parked and Unused Domains from Email Abuse

Domains you never use for mail can still be spoofed. Learn the three DNS records that lock down a parked domain and how to…

Changing DNS Provider Without Breaking Your Email15.09.2026 · 8 Min. Lesezeit

Changing DNS Provider Without Breaking Your Email

Moving your domain's DNS to a new host can silently break e-mail. Learn which records to copy, how to compare zones and how to…

Switching Email Providers: A Checklist to Avoid Lost Mail29.08.2026 · 8 Min. Lesezeit

Switching Email Providers: A Checklist to Avoid Lost Mail

Moving business e-mail to a new provider? Follow this checklist for MX, SPF, DKIM, DMARC, TTLs and mailbox migration so no messages are lost…

MTA-STS and TLS-RPT: Enforcing Encrypted Email Delivery21.08.2026 · 8 Min. Lesezeit

MTA-STS and TLS-RPT: Enforcing Encrypted Email Delivery

MTA-STS makes other servers deliver your incoming mail only over verified TLS, and TLS-RPT reports failures. Learn how both work and how to set…

MX Records Explained: How Email Finds Your Mail Server11.08.2026 · 8 Min. Lesezeit

MX Records Explained: How Email Finds Your Mail Server

MX records tell the internet where to deliver mail for your domain. Learn how priorities work, how to check and change them, and the…

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