Mail gets split into groups on archive server

[Tassilo Horn <tassilo@member.fsf.org>]

Hi all,

my mail splitting for mail-sources is defined by:

--8<---------------cut here---------------start------------->8---
(setq nnmail-split-methods 'nnmail-split-fancy
      nnmail-split-fancy
      '(| (any "tassilo.horn@gmx.de"     "mail.gmx")
          (any "tassilo.horn@freenet.de" "mail.freenet")
          "mail.misc"))
--8<---------------cut here---------------end--------------->8---

Normally this works good and pop3 mails are sorted into the groups

           nnml:mail.freenet
           nnml:mail.gmx
           nnml:mail.misc

I also use nnml-archive groups.

--8<---------------cut here---------------start------------->8---
(setq gnus-message-archive-method
      '(nnml "archive"
             (nnml-inhibit-expiry t)
             (nnml-directory "~/News/archive")
             (nnml-active-file "~/News/archive/active")))

(setq gnus-message-archive-group
      '((cond
         ((message-news-p)
          ;; News
          (concat "sent-messages-" (format-time-string "%Y")))
         ((message-mail-p)
          ;; Mail
          "nnimap+Fastmail:INBOX.Sent Items"))))
--8<---------------cut here---------------end--------------->8---

So my own news postings get archived in groups like

           nnml+archive:sent-messages-2006
           nnml+archive:sent-messages-2007

This works, too.

But sometimes when I check for new messages from my mail-sources it is
split into groups of the archive server and I get groups like:

           nnml+archive:mail.freenet
           nnml+archive:mail.gmx
           nnml+archive:mail.misc

The mails are not different, e.g. sometimes a newsletter is split into
nnml:mail.freenet and the next time it's split into the same group on
the archive server.  I have the feeling that the splitting into the
archive group happens when the system is under heavy load, but that can
be a coincidence.

Any ideas?

Bye,
Tassilo