Don’t know why - but, at this moment, that is what it is doing - repeatedly. 
Thanks Malcolm, I’m working on it.
Wahey, site is alive. Not sure what happened to it, this time everything looked fine (last outage was due to disk space).
Gremlins perhaps.
Great stuff. Well done Chris.
This may or may not be related, but when I tried to reply to Mark’s response to my post about TeenTech Surrey, I got:
Message not delivered
There was a problem delivering your message to replies-7c285efd61417b3c5e657d6896fb30b1@shm-forum.org.uk. See the technical details below or try resending in a few minutes.
The response was:
The recipient server did not accept our requests to connect. Learn more at https://support.google.com/mail/answer/7720 [mail.shm-forum.org.uk. 178.79.183.101: timed out]
I have had that message several times and there is alss no sign of a test message that I sent.