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-rw-r--r--fetchmail.man11
1 files changed, 10 insertions, 1 deletions
diff --git a/fetchmail.man b/fetchmail.man
index 6f803d43..a9b8a21e 100644
--- a/fetchmail.man
+++ b/fetchmail.man
@@ -221,6 +221,12 @@ news drop for a group of users.
The port option permits you to specify a TCP/IP port to connect on.
This option will seldom be necessary as all the supported protocols have
well-established default port numbers.
+.TP
+.B \--principal <principal>
+(Keyword: principal)
+The principal option permits you to specify a service principal for
+mutual authentication. This is applicable to POP3 or IMAP with Kerberos
+authentication.
.TP
.B \-t, --timeout <seconds>
(Keyword: timeout)
@@ -1884,7 +1890,8 @@ on the server but not selected for retrieval.)
.IP 2
An error was encountered when attempting to open a socket to retrieve
mail. If you don't know what a socket is, don't worry about it --
-just treat this as an 'unrecoverable error'.
+just treat this as an 'unrecoverable error'. This error can also be
+because a protocol fetchmail wants to use is not listed in /etc/services.
.IP 3
The user authentication step failed. This usually means that a bad
user-id, password, or APOP id was specified. Or it may mean that you
@@ -2054,6 +2061,8 @@ The UIDL code is generally flaky and tends to lose its state on errors
and line drops (so that old messages are re-seen). If this happens to
you, switch to IMAP4.
.PP
+The `principal' option only handles Kerberos IV, not V.
+.PP
Send comments, bug reports, gripes, and the like to the
fetchmail-friends list <fetchmail-friends@ccil.org>. An HTML FAQ is
available at the fetchmail home page; surf to