---
title: "DNS considerations for your mail server"
slug: "dns-considerations-for-your-mail-domain"
updated: 2026-10-09T18:04:04Z
published: 2026-10-09T18:04:04Z
canonical: "help.quickbase.com/dns-considerations-for-your-mail-domain"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.quickbase.com/llms.txt
> Use this file to discover all available pages before exploring further.

# DNS considerations for your mail server

To send emails through our Courier service and ensure they reach recipients, especially those that belong to the Gmail and/or Yahoo domains, you need to make adjustments to your mail DNS records and settings. These changes apply to your **SPF**, **DKIM**, and **DMARC** policies included with your mail server domain, so you comply with Gmail and Yahoo's sending policies. Without these settings in place, Gmail and/or Yahoo are likely to reject any emails sent to recipients within these domains.

> [!NOTE]
> Note
> 
> Follow these links as they explain what needs to be done. Each of these is from a vendor we use to implement the sending of email through Courier.

[Learn how SPF, DKIM, and DMARC work together](https://www.cloudflare.com/learning/email-security/dmarc-dkim-spf/)

[Learn how to implement DMARC](https://www.mailgun.com/blog/deliverability/implement-dmarc/)

Use this link to see your mail domain settings and check whether the SPF, DKIM, and DMARC records have been applied correctly.

[Check your mail domain's SPF, DKIM, and DMARC records](https://mxtoolbox.com/SuperTool.aspx)

## Google and Yahoo email policy changes

These resources explain why Google and Yahoo changed their email policies and what they now require from senders:

- [Learn about Gmail's new security and authentication requirements](https://blog.google/products/gmail/gmail-security-authentication-spam-protection/)
- [Read Google's guidance on email sender requirements](https://support.google.com/a/answer/81126?visit_id=638417896752142769-3972556092&rd=1)
- [Read Google's FAQ on the new sender requirements](https://support.google.com/a/answer/14229414?sjid=2864589551334481470-NC)
- [Read Yahoo's sender best practices](https://senders.yahooinc.com/best-practices/)
- [Read Yahoo's sender FAQs](https://senders.yahooinc.com/faqs/)
- [Learn about the Gmail and Yahoo inbox updates](https://www.mailgun.com/blog/deliverability/gmail-and-yahoo-inbox-updates-2024/)