On 10 Nov 2016, at 21:27, Eric Tykwinski wrote:
We had some DNS issues, so I was looking through logs and noticed that domain-com.mail.protection.outlook.com <http://domain-com.mail.protection.outlook.com/> was set to a 10 second refresh on the TTL. IMHO, this seems just a bit extreme. Given I know end users can set the min TTL to be what ever they want, but I also think following TTLs for people in known transition states is also good. Just wondering what others here are thinking on the subject...
I think it's a perfectly reasonable TTL for a mail system that uses round-robin DNS for loadbalancing and high availability. Arbitrarily forcing it higher on the client end could have unintended negative consequences.
_______________________________________________ mailop mailing list [email protected] https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
