Issue Problem after switching mail to office 365

[SalvadorS]

Server operating system version

Debian

Plesk version and microupdate number

18.0.45

Hello,

I made changes in DNS records of a client to point mail to office365. Also I switched off mail after the changement. I made it a lot of times but this time when I send a mail from a domain in one of our servers I receive this error:

Host or domain name not found. Name service error
for name=domain.com type=AAAA: Host found but no data record of requested type

However, if I send from gmail, hotmail or whatever mail from outside of our network, mail arrive correctly.

Anyone have any idea of the problem?

 

[AleksL]

Check that office365 domain you wrote to MX value in destination domain's DNS zone has AAAA record
and
check that Postfix on server where you get error isn't configured to use only IPv6.

See Postfix - Host or domain not found