[Mailman-Users] Why is a Mail stuck in qfiles/bad

[Markus Bobe]

Hi!

I have a mailinglist running for several years now, but today a mail keeps getting stuck in qfiles/bad/ and I can't find a reason (or one I don't understand).

The error log says:

Mar 24 11:11:18 2017 (18258) .bak file max count, preserving file: 1490350277.837968+0696655d510e3bad34fee55513eec06ed9b3413c

and when I do a dumpdb -p:

[----- start pickle file -----]
<----- start object 1 ----->

[MAIL CONTENT]

<----- start object 2 ----->
{   '_bak_count': 3,
    '_parsemsg': True,
    'listname': 'newsletter1',
    'received_time': 1490350277.837968,
    'tolist': 1,
    'version': 3}
[----- end pickle file -----]

Can someone tell me the meaning of  ".bak file max count"? I had no success reading the FAQ or searching the mailinglist archive.

Mailman Version is: 2.1.15

Thanks in advance,
Markus