antispam plugin pipe backend error when moving multiple emails

[Sergey Urushkin]

Hello,
wondering why it's still an issue with current git, while this old 
working solution exists (tested with dovecot 2.22 and rspamd 1.4) :

https://www.dovecot.org/list/dovecot/2013-November/093810.html

---
Best regards,
Sergey Urushkin


Stéphane Cottin писал 2016-04-18 15:44:
> Hello,
> 
> I'm bumping this because it still occurs with dovecot 2.2.22.
> 
> my dovecot-antispam plugin configuration :
> 
>   antispam_allow_append_to_spam = no
>   antispam_backend = pipe
>   antispam_pipe_program = /usr/bin/rspamc
>   antispam_pipe_program_args = -h;127.0.0.1:11334;-P;********
>   antispam_pipe_program_notspam_arg = learn_ham
>   antispam_pipe_program_spam_arg = learn_spam
>   antispam_pipe_tmpdir = /var/tmp
>   antispam_spam = Junk
>   antispam_trash = trash;Trash;Deleted Items;Deleted Messages
> 
> zlib enabled:
>   zlib_save = gz
>   zlib_save_level = 9
> 
> 
> When moving 2 or more messages from inbox to the Junk folder:
> 
> "J47 NO [CANNOT] Failed to copy to temporary file (0.000 + 0.000
> secs).”. Command attempted: “J47 UID MOVE 106318:106319 Junk"
> 
> or sometimes
> 
> "J123 NO [CANNOT] Failed to read mail beginning (0.000 + 0.000
> secs).”. Command attempted: “J123 UID MOVE 170789:170790 Junk"
> 
> and still have the "Cached message size smaller..." in dovecot logs.
> 
> It occurs at least when header lines of an email contains Non-ASCII
> Text (rfc1342).
> Batches of full ascii emails are not affected.
> 
> I can easily reproduce this from/to the Junk folder, but had
> unconfirmed reports of similar errors when batch moving mails across
> regular folders.
> 
> Stéphane
> 
> 
> On 8 Nov 2015, at 11:50, Stéphane Cottin wrote:
> 
>> Hi,
>> 
>> I've got some trouble with the dovecot antispam plugin and the pipe 
>> backend.
>> 
>> I'm using dovecot 2.2.18 with maildirs and zlib compression enabled.
>> 
>> When moving 2 or more emails at once from the Junk folder to another 
>> one, I always have the following error : "Failed to copy to temporary 
>> file"
>> 
>> In the server logs :
>> 
>> imap(vvv at vvv.vvv): Error: 
>> read(zlib(/data/Maildir/.test/tmp/1446974366.M123890P936.vvv)) failed: 
>> Cached message size smaller than expected (13553 < 13562, box=test, 
>> UID=0)
>> 
>> The same operation with one email at a time, on the same emails, works 
>> as expected.
>> 
>> Stéphane