>Thus said Ken Hornstein on Thu, 26 Oct 2017 14:22:37 -0400: >But the A record for that name is only 1 second... strange: > >$ dnsqr a cyrus.andrew.cmu.edu >1 cyrus.andrew.cmu.edu: >86 bytes, 1+3+0+0 records, response, noerror >query: 1 cyrus.andrew.cmu.edu >answer: cyrus.andrew.cmu.edu 1 A 128.2.158.26 >answer: cyrus.andrew.cmu.edu 1 A 128.2.105.45 >answer: cyrus.andrew.cmu.edu 1 A 128.2.158.29 > >I wonder what the purpose of such a configuration might be.
I suspect they wanted to provide high reliability and have clients fall over to one of the other servers quickly. But even Google has a TTL of 300 seconds for imap.gmail.com. --Ken _______________________________________________ Nmh-workers mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/nmh-workers
