Variable: nnimap-stream
nnimap-stream is a variable defined in nnimap.el.gz.
Value
undecided
Documentation
How nnimap talks to the IMAP server.
The value should be either undecided, tls or ssl (deprecated),
network, starttls, plain, or shell.
If the value is undecided, nnimap tries tls first, then falls
back on network.
This is a Gnus server variable. See Info node (gnus)Select Methods.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/nnimap.el.gz
(defvoo nnimap-stream 'undecided
"How nnimap talks to the IMAP server.
The value should be either `undecided', `tls' or `ssl' (deprecated),
`network', `starttls', `plain', or `shell'.
If the value is `undecided', nnimap tries `tls' first, then falls
back on `network'.")