Alternaively, the hotmail was (with WLM) being accessed ostensibly using what appear to be POP3 servers, but using IMAP. This is entirely feasible as one cannot rely on the server name to determine the type of service available from a server. e.g. pop.hotmail.com may well support both POP3 and IMAP, likewise imap.hotmail.com may support both as well. One has to explicitly select the service (server) type (e.g. POP3 or IMAP)when setting up the email client, regardless of the server name. In the case of Thunderbird it references a database (based on the domain of the email address) to look up default server names and types and it may well be that overriding these will give the desired result. However, I get the impression that the OP has given up and taken an alternative path.
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