Subj : Re: ODD DNS behaviour on Pi ZERO W with Bullseye OS To : All From : The Natural Philosopher Date : Wed Nov 19 2025 10:59:28 On 19/11/2025 10:47, Andy Burns wrote: > The Natural Philosopher wrote: > >> Indicating a 5 minute delay between being queued and being sent... > > grep 300 /etc/postfix/main.cf > maybe tweak smtpd_timeout=nn if that matches Ah. That file actually exists. Now can you see anything in this section that is odd? smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination myhostname = heating-controller alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases mydestination = $myhostname, heating-controller, localhost.localdomain, localhost relayhost = vps.templar.co.uk mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 mailbox_size_limit = 0 recipient_delimiter = + inet_interfaces = loopback-only inet_protocols = all -- When plunder becomes a way of life for a group of men in a society, over the course of time they create for themselves a legal system that authorizes it and a moral code that glorifies it. Fr‚d‚ric Bastiat --- PyGate Linux v1.5 * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10) .