[Dovecot] delete messages after sa-learn

[Andrzej Adam Filip]

Florian Effenberger <floeff at gmail.com> wrote:
> Hi Andrzej,
>
> 2010/5/28 Andrzej Adam Filip <anfi at onet.eu>:
>
>>> does fetching to mbox file bring any advantage? It seems that learning
>>> out of maildir and rm'ing afterwards works like a charm, so I guess
>>> fetchmail would bring more overhead?
>>
>> It will bring more overhead but "some people" value portable solutions.
>> Some people try to avoid locking THEMSELVES into
>> a) specific format of IMAP folder
>>   As I understand dovecot "recommends" switching from maildir to dbox
>> b) specific software (specific IMAP server)
>>   I do not plan to change dovecot but I do like to keep my options open.
>>
>> Anyway:  instead of scanning all and deleting files in maildir (race
>> risk) you may consider moving files to another file directory/folder
>> (on the same file-system) and learn from it.
>> You may ask Timo How to lock maildir message/file before
>> "moving it out"/"deleting it" by non dovecot software :-)
>
> Hm, now I'm irritated a bit. :-) If I have a dedicated maildir
> directory (IMAP folder) for spam learn, what can happen if I scan and
> delete files out of it? The worst thing that can happen is that the
> IMAP folder gets corrupt, which is not harm, as it's spam anyway.
> However, from what I've heard, Maildir doesn't have any file locking
> issues, so there should be no problem?
>
> Florian

It depends on what you want:
a) dirty&ugly but *trivial* "hack" serving your very specific
   requirement that can "make troubles" after some change in
   pattern of use 
b) simple solution

-- 
[pl>en: Andrew] Andrzej Adam Filip : anfi at onet.eu
10) there is no 10, but it sounded like a nice number :)
  -- Wichert Akkerman