Photovoltaics sales and installation, 112 people
Email that stopped going to spam
- Result
- Company email arrives in the inbox rather than the spam folder.
- Duration
- 1 day
- Problem
- The domain's DNS had accumulated several times more records than could be read in one sitting — including dead and broken ones left by tools the company had long stopped using. Outgoing mail was landing in spam because of it.
- What we built
- We went through the whole zone record by record, removed what was dead or contradictory, and set up outgoing mail authentication again, unambiguously.
- Operating status
- Handed over
This is the work nobody sees and that costs a company the most. An invoice goes out, the customer never receives it, and a week later a salesperson is asking why nobody replied.
The cause is usually the same: a DNS zone that gained records with every new tool over the years and never lost any. Records were left behind by services the company no longer used, some of them contradicted each other, and there were too many to take in at a glance.
Mail servers have no way to guess which record still applies. When they cannot decide, they file the message as spam — and tell nobody.
So this was not "setting up DNS" but clearing out: removing everything that no longer belonged, and leaving one unambiguous answer to the question of who is allowed to send mail on the company's behalf.
Tech: DNS · SPF · DKIM · DMARC