Plusnet email moving to Greenby

[#1]

and often connect via imap.plus.net (or mail.plus.net) even for POP3

You can ignore the confusion between imap.plus.net and mail.plus.net, they both refer to exactly the same IP address and system. Whether an IMAP or POP3 connection is made depends entirely on which port you use and how you configure your email client. Use port 995 for POP3 and 993 for IMAP.

Having said that, I would suggest using the mail.plus.net name for POP3 and imap.plus.net name for IMAP. It makes no difference technically but it makes it easier for a human to understand😀

[#2]

I appear to have resolved one issue; that of not receiving e-mails. I set up new accounts for each inbox in thunderbird using the same greenby settings rather than trying to edit the original account data values . I then closed down windows and restarted it from cold. Hey presto, I am now receiving email although it appears to be duplicating every new message. Still no luck on the sending problem though.

[#3]

Maybe install a new copy of Thunderbird and set up again?

Seems a bit drastic though. Why can't the parameters simply be changed to Greenby requirements?