[nznog] Re: forward & reverse dns

On Thu, Nov 05, 2020 at 06:33:42PM +1300, Richard Hector wrote:

I'm not trying to host here (in this case). My mailserver is at a hosting provider, where all is good (barring the lack of IPv6 ...).

It's when my home machine connects to my mailserver that I see what I thought was considered a misconfiguration of DNS.

I'd argue that a mail server is misconfigured if it logs a warning when an authenticated client submitting mail on tcp/587 doesn't have matching forward and reverse DNS. Mail submission != mail transfer, and DNS records the client does or does not have are not all that relevant for mail submission. -- Jasper