Since migration my email client often receives a pair of errors when trying to send an email to the Force9 SMTP server:
451 4.3.0 Error: queue file write error
421 4.3.0 Mail system error
The email is not sent, but usually it succeeds when I notice and try sending it again.
This was reported to Greenby on 15th December, and since then they have kept reporting that it is being monitored and "the engineering team is continuing work on a permanent fix to make sure this doesn’t happen again"
However, it is still affecting me, and over the last 7 days it is about a 7% failure rate - and this is on an average of only 20 emails sent a day (often to other plusnet addresses!).
I have also realised that the same error is the cause of missing emails that my NAS sends me, as I have just found it has logged about 20 of these errors since migration in the last 4 weeeks. And it does not retry, so the emails are lost.
I have posted here to see if anyone else is experiencing these errors?
