MSGID: <10fj0i4$1tbb7$3@dont-email.me> e0834013
REPLY: <10fi386$1km85$4@dont-email.me> 046d131e
PID: PyGate 1.5
TID: PyGate/Linux 1.5
CHRS: ASCII 1
TZUTC: 1100
REPLYADDR ldo@nz.invalid
REPLYTO 3:633/10 UUCP
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=, 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)
SEEN-BY: 105/81 106/201 128/187 129/14 305 153/7715 154/110 218/700
SEEN-BY: 226/30 227/114 229/110 112 200 206 275 300 317 400 426 428
SEEN-BY: 229/470 616 664 700 705 266/512 291/111 292/854 320/219 322/757
SEEN-BY: 342/200 396/45 460/58 633/10 280 414 418 420 422 509 2744
SEEN-BY: 712/848 770/1 902/26 2320/105 5020/400 5075/35
PATH: 633/10 280 229/426