Thank you for looking into this. Yes I had a couple of returns last Friday, lurking in the spam box.
On first setup, you may remember I experienced some problems with email delivery, which you had kindly looked into. The lack of reverse DNS was one issue and another that required updates to sympl, at which point I think you switched me to stretch-testing, which I am still on, I don’t think I set it to testing.
Later - some time later - I noticed that messages posted by backup2l from root@ were not coming through.
It was at that point I spotted a new directory in /srv/xx.xxx.xx.xxx based on the server IP address, alongside the /srv/xxx.vs.mythic-beasts.com one. Assuming this was related to the reverse DNS I tried adding the forward file in mailboxes/root, which now works. I’ve never seen a similar directory automatically created in symbiosis and probably should have asked sooner …
What do you think?