My best practices for using IMAPSYNC include changing the TTL of your existing MX records to the lowest possible value a day before the switch over. The use IMAPSYNC to migrate the emails, switch DNS

If you go the haproxy + round robin route you don't need to do anything at the DNS level: the browser should deal with the round robin if one host is down and haproxy will manage the rest.

I don't know how to setup session affinity with Bunny DNS. I think the best bet is to have a main Haproxy server for each region. If it fail then BunnyDNS can route to fail over Haproxy. Then, the Hap

Look like it is not possible to have session affinity with Bunny DNS.

Is it possible to use Bunny DNS + CF CDN without using CF's DNS?

Check https://docs.bunny.net/docs/scriptable-dns-helper-objects for what can be done currently. If you want to do complex load balancing on the cheap you could use bunny to remove offline servers and

If you use BunnyDNS Load Balancing and Geo Routing is included, right?

I go with a stable name scheme (which is also present in DNS).

I also think that it is worth trying BunnyDNS for a small site without Cloudflare or any HAProxy first. If it is not good then purchase Cloudflare Load Balancer later.

Why not? You can use a CNAME with the scriptable DNS and it could redirect to a Bunny storage zone or whatever...

I had thought to shift the sites to BunnyDNS, use their scriptable dns, cdn and be in peace. But you cannot use their CDN if you are using their scriptable DNS. (Image)

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I think the billing for DNS requests is per site. But the $5 subscription is for the health check which is limited per account.

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I tried a similar approach with Google GeoDNS on one domain and multiple domains on Cloudflare Free.

You keep most of your domains DNS at CF.

I have checked the BunnyCDN & BunnyDNS today. I like their offerings. If they had the option to set firewall rules like Cloudflare then I would have switched the domains to BunnyDNS. May be I

Another option would be a scriptable dns objet at Bunny.net that would make it possible to automatically switch to two different subdomains (CNAME). See https://docs.bunny.net/docs/scriptable-dns-help

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