eXTric
February 8, 2023, 5:23pm
2
There should not be an issue with a short downtime as long as you have a 2nd DNS server (which is not on the box) that can resolve. The other servers will try to resend the emails multiple times for a longer period if your server is down but the DNS records exist.
Hi !
First, sorry for my bad english …
Second, a big thanks for this great project, it works like a charm !
Before pass it on production, I’m aware about downtime and possibly lost of mails. Murphy’'s rules says this will happen at the worst time …
Adding a “MX 20 backup.example.com ” rule in the “Custom DNS” goes to an alert and it’s not supported
I’m looking for adding a failover mail relay, by adding the rule in DNS config directly in /etc/nsd/zones/ but the script overwrite it at every u…
Interesting and good to know, thanks!
I always like to know about providers providing Secondary DNS service for “free” since I am such a proponent of using it.
So far my short list is:
Puck Secondary DNS (Free)
Hurricane Electric (Free)
1984 FreeDNS (Free - No Services Required)
Gandi NS6 (Free for domains registered via Gandi)
Hetzner also offers it but I have not found it to be overly simple to enable.
and now
Linode DNS Manager (Free with at least one VPS)
Anyone have any more …