Losing Mail in Gnus

[Brett Randall]

Hey all

I'm having a very strange problem with my Gnus. I'm running NoGnus 0.9
with all my mail stored in nnml format, and with Gnus spooling my mail
from my Maildir, to which mail is delivered with fetchmail and a local
postfix server.

Occasionally I will see that I have received mail in one of my groups,
and I go to read it, and it isn't there. If I delve down into the
filesystem, I cannot find any sign of the e-mail in the nnml directory,
so its not like its hidden, its really not even there, even though Gnus
thought it was.

If I then open webmail to another account to which all my e-mail is
automatically forwarded (server side), I can see the e-mail that was
supposed to be in that particular group. So its not like Gnus is
randomly thinking I have new e-mail when I don't. I actually did have a
new e-mail, but when I go to view it, it wasn't there.

The ONLY thing I can think of is that maybe fetchmail/postfix is still
in the middle of delivering to my Maildir when Gnus tries to suck it in
to its backend, and for some reason the e-mail gets lost there.

Does anyone have a clue how I would debug this kind of thing? Its a
little unnerving losing e-mails and sometimes not even knowing about it!

The relevant portion of my .gnus is:

 (setq gnus-secondary-select-methods
        '(
          (nnml "brett" (nnml-directory "~brett/Mail/"))
          (nnml "mairix" (nnml-directory "~brett/.mairix"))
          )
 )

 (setq mail-sources '((maildir) (maildir :path "~brett/Maildir/cur")))
 (setq nnml-get-new-mail t)
 (setq mail-source-delete-incoming t)

Thanks in advance

Brett.