I'm happily using dovecot as my IMAP server and accessing mails using Thunderbird... but I want to use the Net::IMAP facilities in the Ruby standard library to write some scripts to automate various spam-related tasks & housekeeping.
My Ruby script:
require "net/imap"
imap = Net::IMAP.new('localhost')
imap.authenticate('LOGIN','myuser','mypassword')
# More stuff using imap...From the documentation LOGIN uses plaintext authentication - which I understand is always acceptable for Dovecot when connecting from localhost. On the 3rd line I get a "NO response" exception raised (indicating that the IMAP server replied "NO") and the error message "Net::IMAP::NoResponseError: Unsupported authentication mechanism" If I change 'LOGIN' to 'CRAM-MD5' (the other value supported by Net::IMAP) then I get a similar (but not identical) error: "Net::IMAP::NoResponseError: Authentication failed: Unsupported authentication mechanism" If I use anything other than either 'LOGIN' or 'CRAM-MD5' I get an error from the Net::IMAP library saying "Unknown auth type" - which is reasonable.
N.B. I've tried both where 'myuser' and 'mypassword' are valid - and not... this doesn't affect the error messages.
There doesn't seem to be anything of interest in /var/log/messages...
Can anyone tell me what is going wrong, and how to resolve this?