gnus的问题

目标：用fetchmail收邮件，在emacs中用gnus阅读，以便分类存储邮件和按主题分类阅读，目前只想将CPyUG邮件列表单独存储。
fetchmail 已下载邮件到~/.evolution/mail/local/Inbox
mutt已可正确打开阅读。
gnus的部分配置：
(setq
user-full-name "xxxx"
user-mail-address "[email protected]"
gnus-select-method '(nntp "localhost")
gnus-secondary-select-methods '((nnml ""
(nnml-directory "~/Mail")
(nnml-active-file "~/.evolution/mail/local/Inbox"))))
(setq nnmail-split-methods 'nnmail-split-fancy)
(setq nnmail-split-fancy
'(| ;; 根据 mailing list 分类
(any "CPyUG" "nnml:mail.CPyUG")
))

打开gnus时，message的出错信息。
Warning - invalid active: nnml:
Warning - invalid active: nnml:--000e0cd17ea8a67fbe04614fb54b--
Warning - invalid active: nnml:
Warning - invalid active: nnml:Mime-Version: 1.0
Warning - invalid active: nnml: [2 times]
Warning - invalid active: nnml:--001636e0b96d9f1f7a0461514570
Warning - invalid active: nnml:
Warning - invalid active: nnml:Isils/3M1tHhtcTM+casy67ToSIgysfU9cO01/a1vbXEo78KCjIwMDkvMS8yNSBmcmVlLndhbmcg
Warning - invalid active: nnml:PGZyZWVmaXNAZ21haWwuY29tPgoKPiCyu7TtLiAgtPrC6yDKtc/Wuty88rWlLCDSsrrcyrnTwy4K
Warning - invalid active: nnml:Pgo+IDIwMDkvMS8yNSBKYW0gc2kgPGphbWVzLnNpQGdtYWlsLmNvbT4KPgo+PiBodHRwOi8vcmVh
Warning - invalid active: nnml:ZHBpYy5hcHBzcG90LmNvbS8KPj4KPj4gzbzGrLT6wO2jrLrc0KGjrLWrutzKtdPDoaMKPj4KPj4K
Warning - invalid active: nnml:Pj4KPgo+Cj4gLS0KPiDV5tX9tcS93LP2o6yyu8rHw+7Tw7nm1PK1xLTtsuOjrLb4yse8q9bCtcTG
Warning - invalid active: nnml:q9a009rQxcTuLgo+IFRoZSBDcmFua2luZXNzIG9mICBCZWxpZWYgYWNoaWV2ZXMgR3JlYXRlICwg
Warning - invalid active: nnml:bm90IHRoZSBUcmljayBvZiBSZWd1bGF0aW9uLgo+Cj4gPgo+CgotLX4tLX4tLS0tLS0tLS1+LS1+
Warning - invalid active: nnml:LS0tLX4tLS0tLS0tLS0tLS1+LS0tLS0tLX4tLX4tLS0tfgrAtNfUOiBgcHl0aG9uLWNuYDpDUHlV
Warning - invalid active: nnml:RyB+ILuq8v7Tw7un1+kgfCC3otHUOnB5dGhvbi1jbkBnb29nbGVncm91cHMuY29tDQrNy7apOiBo
Warning - invalid active: nnml:dHRwOi8vdGlueXVybC5jb20vNDVhOXRiIC/V67bUMTYzL3Fx08rP5DpodHRwOi8vdGlueXVybC5j
Warning - invalid active: nnml:b20vNGRnNmhjDQrP6sfpOiBodHRwczovL2dyb3Vwcy5nb29nbGUuY29tL2dyb3VwL3B5dGhvbi1j
Warning - invalid active: nnml:bg0K0c/V/TogwO294sHQse0hINbHu9vM4c7KISBodHRwOi8vd2lraS53b29kcGVja2VyLm9yZy5j
Warning - invalid active: nnml:bi9tb2luL0Fza0ZvckhlbHAKLX4tLS0tLS0tLS0tfi0tLS1+LS0tLX4tLS0tfi0tLS0tLX4tLS0t
Warning - invalid active: nnml:fi0tLS0tLX4tLX4tLS0KCg==
Warning - invalid active: nnml:--001636e0b96d9f1f7a0461514570
Warning - invalid active: nnml:
Warning - invalid active: nnml:l.com</a>&gt;</span><br><blockquote class=3D"gmail_quote" style=3D"border-l=
Warning - invalid active: nnml:=B2=BB=B4=ED.&nbsp; =B4=FA=C2=EB =CA=B5=CF=D6=BA=DC=BC=F2=B5=A5, =D2=B2=BA=
Warning - invalid active: nnmlspot.com/</a><br><br>=CD=BC=C6=AC=B4=FA=C0=ED=A3=AC=BA=DC=D0=A1=A3=AC=B5=
Warning - invalid active: nnml:=AB=BA=DC=CA=B5=D3=C3=A1=A3<br><br>
Warning - invalid active: nnml:<br>
Warning - invalid active: nnml:=D4=F2=B5=C4=B4=ED=B2=E3=A3=AC=B6=F8=CA=C7=BC=AB=D6=C2=B5=C4=C6=AB=D6=B4=D3=
Warning - invalid active: nnml:
Warning - invalid active: nnml:<br> [2 times]
Warning - invalid active: nnml:</div></div></blockquote></div><br>
Warning - invalid active: nnml:<br>
Warning - invalid active: nnml:--~--~---------~--~----~------------~-------~--~----~<br>
Warning - invalid active: nnml:=D1=D4[email protected]
Warning - invalid active: nnml:=E4:http://tinyurl.com/4dg6hc
Warning - invalid active: nnml://wiki.woodpecker.org.cn/moin/AskForHelp<br>
Warning - invalid active: nnml:-~----------~----~----~----~------~----~------~--~---<br>
Warning - invalid active: nnml:<br>
Warning - invalid active: nnml:
Warning - invalid active: nnml:--001636e0b96d9f1f7a0461514570--
Warning - invalid active: nnml: