Subj : Re: ODD DNS behaviour on Pi ZERO W with Bullseye OS
To   : All
From : Lawrence D?Oliveiro
Date : Wed Nov 19 2025 11:30:02

On Tue, 18 Nov 2025 15:27:01 +0000, The Natural Philosopher wrote:

> Seriously,m its not the server, its the DNS.

What are you running as your DNS server?

> Nov 18 10:46:57 heating-controller postfix/smtp[10457]: CC05B1F270:
> to=<superroot@templar.co.uk>, relay=none, delay=0.38,
> delays=0.19/0.14/0.04/0, dsn=4.4.3, status=deferred (Host or domain
> name not found. Name service error for name=vps.templar.co.uk
> type=MX: Host not found, try again)

You could try doing a lookup (using host or dig) to your DNS server
from the Raspberry pi at the same time as the MTA is reporting
problems, and see if your manual query reports the same problem.

Does your /etc/resolv.conf contain the right info? Is it a symlink to
somewhere else?

--- PyGate Linux v1.5
 * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

.