#mail server setup

Tagged: mail server setup

07 Jul 2026Sam wallness

PTR Records and Reverse DNS: Why Your Sending IP Needs a Name

PTR records and reverse DNS are among the most overlooked pieces of email infrastructure — yet a missing or misconfigured PTR record can cause your messages to be rejected before any content filter looks at them. Here's what PTR records are, why receiving servers check them, and how to get yours right.

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PTR Records and Reverse DNS: Why Your Mail Server Needs a Matching Hostname

DNS & Domains

07 Jul 2026Sam wallness

PTR Records and Reverse DNS: Why Your Mail Server Needs a Matching Hostname

PTR records map an IP address back to a hostname — and receiving mail servers check them on every inbound connection. Without a correctly configured PTR record and forward-confirmed reverse DNS, your messages pick up a reputation penalty before content is even evaluated.

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