backing up IMAP server on a hard drive

[Kevin Laurie]

Hi,
I am trying to back up my IMAP server to a hard drive. Later I intend to
extract all mails for attachments. What do you reckon is the best too to
perform this ?

Imapsync or Thunderbird (or something else, please recommend)

One problem I am having with imapsync is the setting for host2 (being a
localhost computer).
How does one set a parameter for host2 being a desktop computer.

Thanks
Kevin