[pfx] Re: Postfix relayhost dns records question

Tue, 11 Mar 2025 03:53:12 -0700

Neglible impact. That‘s what DNS is for.
Postfix doesn‘t do the resolving, it‘s up to your system configuration (you should have a local caching resolver for best performance).

  Ömer

Am 11.03.2025 um 11:17 schrieb John Doe via Postfix-users <[email protected]>:


Hi,

Can't find answer, about postfix dns preferences and dns lookup performance.
Let's say I have relayhost with FQDN: srv2378948273.mydomain.com

I'd like to create a DNS Alias record or A record to use more friendly name:


Does postfix prefers A record more than DNA Alias ?
And is there any performance or other issue with Alias records ?

Best Regards,
John

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