ptrcnull.me/content/posts/mail-dns-setup.md

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2020-12-19 15:08:44 +00:00
---
title: "Mail DNS Setup"
date: 2020-12-19T15:59:43+01:00
draft: false
---
Since I always struggle with DNS records for mailservers... here are some examples:
## DMARC
```text
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_dmarc TXT "v=DMARC1; p=none; rua=mailto:dmarc@domain.tld"
```
- **v** - version of DMARC (`DMARC1`)
- **p** - policy (`none`, `quarantine`, `reject`)
- **rua** - URI for agreggate reports (comma-separated)
- **ruf** - URI for failure reports (comma-separated)
## SPF
```text
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@ TXT "v=spf1 mx -all"
```
- **v** - version (`spf1`)
- **mx** - allow emails from servers specified in MX records
- **-all** - don't allow from everyone else