I was about to say "emails missing" but 2 have this minute arrived. So they've been stuck somewhere - and I'm still waiting for another. I know they are out there because the mails go to my own domain's host which forwards them both to PlusNet and to Outlook.com, and I see them immediately in Outlook.
The first was sent at 10am today, and has arrived at 16:45. The receiving headers are
Received: from [84.93.230.228] (helo=avasin-ptp-003.plus.net)
by inmx14.plus.net with esmtp (PlusNet MXCore v2.00) id 1nhvT3-0006sw-Cu
for xxx@xxx.plus.com; Fri, 22 Apr 2022 16:45:09 +0100
and
Received: from [84.93.230.228] (helo=avasin-ptp-003.plus.net)
by inmx-peh-010.plus.net with esmtp (PlusNet MXCore v2.00) id 1nhvTl-0007bO-Fr
for xxx@xxx.plus.com; Fri, 22 Apr 2022 16:45:53 +0100
Other emails have arrived promptly via 84.93.230.243 and 212.159.14.26, so I suspect 84.93.230.228 has a problem.
I reported to the helpdesk earlier but nothing useful transpired.
