> On 16 November 2017, at 14:45, Viktor Dukhovni <postfix-us...@dukhovni.org> > wrote: > > > >> On Nov 16, 2017, at 5:32 PM, Doug Hardie <bc...@lafn.org> wrote: >> >> I have a domain, say: aaa.com for which I receive mail. Currently I have A >> records in DNS for aaa.com and mail.aaa.com as well as a MX record for >> aaa.com. All three of them point to the same IP address which is where >> postfix is running. There is a political issue with the A record for >> aaa.com and it "needs" to be changed to elsewhere. I somehow seem to recall >> that there are some MTAs that do not use the MX records, but only check the >> A records. > > Any MTA that fails to check MX records is badly broken, and can barely > deliver email to any domains that matter (all the big players have > MX hosts separate from their A/AAAA records used primarily for HTTP). > >> Will changing the A record for aaa.com cause the loss of some incoming mail > > No. > > -- > Viktor. >
Thanks to all. I have changed the A record.
