I am trying to copy some plain old unix mailbox files into an imap
server (cyrus), using mailutil.

After several successful operations, one append aborted with the
message it had encountered a NUL (after having run for quite awhile).
Any suggestions about how to proceed?

The exercise has raised some background questions as well.  First,
each run seems to take quite awhile (5 minutes?), although the input
files are somewhat big (c 64 MG for the one that bombed).  During that
time there is very little CPU use.  My disk is a recent
workstation-level SATA--nothing fancy for performance.  Am I just
stalled on the disk, or is this worth looking into (I have a lot more
mailboxes to go)?

Second, is there any way around the prompt for login each time the
program runs?

Third, it appears that none of the messages from the mailbox on which
I got the error are in the IMAP server.  Is that the expected
behavior if there is an error?  Does mailutil first look through the
whole input mailbox before sending anything to the output?

Finally, the documentation I can find is incomplete.  For example, the
man page for mailutil says "The arguments are standard c-client
mailbox names" and then gives some examples.  But I can't find any
specification of what those names are (it says consult your system
administrator, but that's me).  The FAQ, for example, mentions
/ssl or /tls arguments, but I can't even tell where they go (including
whether they are part of the mailbox specification, which some of the
material seems to suggest, or more general command line options).

Maybe if I had a full UW IMAP server installation the information
would be lying around, but I can't find it on my machine or the UW
IMAP site.

I'm running with the uw-mailutils Debian package, version
2002edebian1-13, on a 32 bit Debian GNU/Linux system.  The
old-style mailboxes are on a different system than the IMAP server,
but I've been copying them over and decompressing them.  As a result,
mailutil is reading the old mailbox from the local disk and sending it
the server on the same machine.

Thanks for any help or pointers you can offer.

Ross Boylan

(I've downloaded the source, but haven't yet looked into it.  I'm
comfortable with a debugger, if that would help.)
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