# Synology RT1900AC DNS management : Too much DNS settings

**URL:** <https://discourse.pi-hole.net/t/synology-rt1900ac-dns-management-too-much-dns-settings/13423>\
**Category:** Synology\
**Created:** [October 4, 2018, 12:54pm UTC](https://discourse.pi-hole.net/t/synology-rt1900ac-dns-management-too-much-dns-settings/13423 "2018-10-04T12:54:49Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![jfb](https://discourse-cdn.pi-hole.net/user_avatar/discourse.pi-hole.net/jfb/32/4332_2.png) [@jfb](https://discourse.pi-hole.net/u/jfb)\
**Post date:** [October 4, 2018, 1:38pm UTC](https://discourse.pi-hole.net/t/synology-rt1900ac-dns-management-too-much-dns-settings/13423/2 "2018-10-04T13:38:48Z")

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> [@kevincork](#):
>
> I have Primary DNS Server  
> Secondary DNS Server with 1. pihole and second 1.1.1.1

If you set up your DNS this way, some of the traffic won't go to the Pi-Hole, it will go directly to Cloudflare. The terms "primary" and "secondary" can be misleading; both DNS entries will be used.

> [@Why should Pi-hole be my only DNS server?](https://discourse.pi-hole.net/t/why-should-pi-hole-be-my-only-dns-server/3376):
>
> Reduced Ad Blocking Capability The main reason you should Pi-hole as your only DNS server is that you will see increased performance in the blocking of ads. If you have two DNS servers (Pi-hole and something else), your network clients may not always query Pi-hole for name resolution. If a query happens to be answered from a non-Pi-hole DNS server, your block lists will not apply (since that DNS server doesn't know about them). All Queries Need To Go Through Pi-hole First Since other DNS serv…

Can you make a sketch of your network setup and post it here?

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